# Factors of 225 in pair

Factors of 225 in pair are (1, 225) , (3, 75) , (5, 45) , (9, 25) and (15, 15)

#### How to find factors of a number in pair

 1.   Steps to find factors of 225 in pair 2.   What is factors of a number in pair? 3.   What are Factors? 4.   Frequently Asked Questions 5.   Examples of factors in pair

### Example: Find factors of 225 in pair

Factor Pair Pair Factorization
1 and 225 1 x 225 = 225
3 and 75 3 x 75 = 225
5 and 45 5 x 45 = 225
9 and 25 9 x 25 = 225
15 and 15 15 x 15 = 225

Since the product of two negative numbers gives a positive number, the product of the negative values of both the numbers in a pair factor will also give 225. They are called negative pair factors.

Hence, the negative pairs of 225 would be ( -1 , -225 ) .

#### Definition of factor pairs?

In mathematics, factor pair are often given as pair of numbers which when multiplied together give the original number. Every natural number is a product of atleast one factor pair. Eg- Factors of 225 are 1 , 3 , 5 , 9 , 15 , 25 , 45 , 75 , 225. So, factors of 225 in pair are (1,225), (3,75), (5,45), (9,25), (15,15).

#### What are factors?

In mathematics, a factor is that number which divides into another number exactly, without leaving a remainder. A factor of a number can be positive or negative.

#### Properties of Factors

• Every factor of a number is an exact divisor of that number, example 1, 3, 5, 9, 15, 25, 45, 75, 225 are exact divisors of 225.
• Every number other than 1 has at least two factors, namely the number itself and 1.
• Each number is a factor of itself. Eg. 225 is a factor of itself.
• 1 is a factor of every number. Eg. 1 is a factor of 225.

#### Steps to find Factors of 225

• Step 1. Find all the numbers that would divide 225 without leaving any remainder. Starting with the number 1 upto 112 (half of 225). The number 1 and the number itself are always factors of the given number.
225 ÷ 1 : Remainder = 0
225 ÷ 3 : Remainder = 0
225 ÷ 5 : Remainder = 0
225 ÷ 9 : Remainder = 0
225 ÷ 15 : Remainder = 0
225 ÷ 25 : Remainder = 0
225 ÷ 45 : Remainder = 0
225 ÷ 75 : Remainder = 0
225 ÷ 225 : Remainder = 0

Hence, Factors of 225 are 1, 3, 5, 9, 15, 25, 45, 75, and 225

• Is 225 a composite number?

Yes 225 is a composite number.

• Is 225 a perfect square?

Yes 225 is a perfect square.

• Write all odd factors of 225?

The factors of 225 are 1, 3, 5, 9, 15, 25, 45, 75, 225.
Odd factors of 225 are 1 , 3 , 5 , 9 , 15 , 25 , 45 , 75 , 225.

• What is the mean of all prime factors of 225?

Factors of 225 are 1 , 3 , 5 , 9 , 15 , 25 , 45 , 75 , 225. Prime factors of 225 are 3 , 3 , 5 , 5. Therefore mean of prime factors of 225 is (3 + 3 + 5 + 5) / 4 = 4.00.

• What do you mean by proper divisors?

A number x is said to be the proper divisor of y if it divides y completely, given that x is smaller than y.

#### Examples of Factors

Can you help Rubel in arranging 225 blocks in order to form a rectangle in all possible ways? For arranging 225 blocks in order to form a rectangle in all possible ways we need to find factors of 225 in pair.

Factors of 225 are 1, 3, 5, 9, 15, 25, 45, 75, 225. So, factors of 225 in pair are (1,225), (3,75), (5,45), (9,25), (15,15).

How many total number of factors of 225 in pair are possible?

Factors of 225 are 1, 3, 5, 9, 15, 25, 45, 75, 225. Hence, the factors of 225 in pair are (1,225), (3,75), (5,45), (9,25), (15,15). Therefore, in total 5 pairs of factors are possible.

Sammy wants to write all the negative factors of 225 in pair, but don't know how to start. Help Sammy in writing all the factor pairs.

Negative factors of 225 are -1, -3, -5, -9, -15, -25, -45, -75, -225. Hence, factors of 225 in pair are (-1,-225), (-3,-75), (-5,-45), (-9,-25), (-15,-15).

Find the product of all prime factors of 225.

Factors of 225 are 1, 3, 5, 9, 15, 25, 45, 75, 225. Prime factors are 3, 3, 5, 5. So, the product of all prime factors of 225 would be 3 x 3 x 5 x 5 = 225.

A student has been assigned the following tasks by the teacher:
- Finding out all positive factors of 225.
- Writing all prime factors of 225.
- Writing all the possible factors of 225 in pair.
Help him in writing all these.

Positive factors of 225 are 1, 3, 5, 9, 15, 25, 45, 75, 225.
Prime factors of 225 are 3, 3, 5, 5.
Factors of 225 in pair are (1,225), (3,75), (5,45), (9,25), (15,15).

Can you help Sammy list the factors of 225 and also find the factor pairs?

Factors of 225 are 1, 3, 5, 9, 15, 25, 45, 75, 225.
Factors of 225 in pair are (1,225), (3,75), (5,45), (9,25), (15,15).

Help Diji in finding factors of 225 by Prime Factorization method and then sorting factors of 225 in pairs.

Prime factorization of 225 is 3 x 3 x 5 x 5. Factors of 225 in pair can be written as (1,225), (3,75), (5,45), (9,25), (15,15).

Write the smallest prime factor of 225.

Smallest prime factor of 225 is 3.