Is 525 a prime or composite number?

1 Answer
Shwetank Mauria
Apr 1, 2016

525 is a composite number.

Explanation:

While prime numbers do not have any factor other than 1 and the number itself, composite numbers do have factors other than 1 and the number itself. Note here, the number itself means 525.

As 525 is clearly divisible by 5 (last digit being one of 5 or 0) as also by 3 (as sum of digits is 12 divisible by 3), 525 is divisible both by 3 and 5 as well as 15.

Hence 525 is a composite number.

In fact 525 has its factor as {1,3,5,7,15,21,25,35,75,105,175,525}

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