# What is the GCD of 5, 10, 15, 20 & 25?

getcalc.com's GCD calculator to find what is GCD of five numbers 5, 10, 15, 20 and 25.

5 is the GCD of 5, 10, 15, 20 and 25. The Greatest Common Divisor 5 divides each integers in this group. The grade school students, teachers or parents may refer the below complete workout with step by step work to create or solve the worksheet problems or how to find what is the GCD for five numbers 5, 10, 15, 20 & 25.

## How to find GCD of 5, 10, 15, 20, 25?

GCD or HCF of five numbers can be easily found by prime factorization method. Follow the below steps to find the GCD of given group of numbers.

** Problem & Workout** :

step 1 Address the method, input parameters & values

5, 10, 15, 20, 25

find gcd (5, 10, 15, . . . . , 25) = ?

step 2 Find the prime factors of all integers of the group

5 = 5

10 = 2 x 5

15 = 3 x 5

20 = 2 x 2 x 5

25 = 5 x 5

step 3 Take the common prime factors out from all the integers across group and multiply them to find the GCD of group of integers. The GCD is 1, if there is no common prime factors across all the integers or if any one integer in the group is a prime number.

The common factors across all integers is 5

gcd (5, 10, 15, . . . . , 25) = 5

5 is the greatest common divisor for 5, 10, 15, 20 and 25