87920925 has 12 divisors (see below), whose sum is σ = 145362720. Its totient is φ = 46891120.

The previous prime is 87920909. The next prime is 87920969. The reversal of 87920925 is 52902978.

It is not a de Polignac number, because 87920925 - 2⁴ = 87920909 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 586065 + ... + 586214.

It is an arithmetic number, because the mean of its divisors is an integer number (12113560).

Almost surely, 2^87920925 is an apocalyptic number.

It is an amenable number.

87920925 is a deficient number, since it is larger than the sum of its proper divisors (57441795).

87920925 is a wasteful number, since it uses less digits than its factorization.

87920925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172292 (or 1172287 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 87920925 is about 9376.6158607463. The cubic root of 87920925 is about 444.6627499873.

The spelling of 87920925 in words is "eighty-seven million, nine hundred twenty thousand, nine hundred twenty-five".