87656525 has 12 divisors (see below), whose sum is σ = 118575744. Its totient is φ = 63750000.

The previous prime is 87656509. The next prime is 87656533. The reversal of 87656525 is 52565678.

It is not a de Polignac number, because 87656525 - 2⁴ = 87656509 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian 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, 159101 + ... + 159650.

It is an arithmetic number, because the mean of its divisors is an integer number (9881312).

Almost surely, 2^87656525 is an apocalyptic number.

It is an amenable number.

87656525 is a deficient number, since it is larger than the sum of its proper divisors (30919219).

87656525 is a wasteful number, since it uses less digits than its factorization.

87656525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318772 (or 318767 counting only the distinct ones).

The product of its digits is 504000, while the sum is 44.

The square root of 87656525 is about 9362.5063417869. The cubic root of 87656525 is about 444.2165654138.

The spelling of 87656525 in words is "eighty-seven million, six hundred fifty-six thousand, five hundred twenty-five".