15165625 has 24 divisors (see below), whose sum is σ = 19873728. Its totient is φ = 11550000.

The previous prime is 15165611. The next prime is 15165653. The reversal of 15165625 is 52656151.

It is not a de Polignac number, because 15165625 - 2⁵ = 15165593 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71770 + ... + 71980.

It is an arithmetic number, because the mean of its divisors is an integer number (828072).

Almost surely, 2^15165625 is an apocalyptic number.

It is an amenable number.

15165625 is a deficient number, since it is larger than the sum of its proper divisors (4708103).

15165625 is an frugal number, since it uses more digits than its factorization.

15165625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259 (or 239 counting only the distinct ones).

The product of its digits is 9000, while the sum is 31.

The square root of 15165625 is about 3894.3067418990. The cubic root of 15165625 is about 247.5255899807.

The spelling of 15165625 in words is "fifteen million, one hundred sixty-five thousand, six hundred twenty-five".