87565625 has 24 divisors (see below), whose sum is σ = 125116992. Its totient is φ = 60030000.

The previous prime is 87565613. The next prime is 87565631. The reversal of 87565625 is 52656578.

It is not a de Polignac number, because 87565625 - 2⁴ = 87565609 is a prime.

It is a Curzon 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, 19874 + ... + 23876.

It is an arithmetic number, because the mean of its divisors is an integer number (5213208).

Almost surely, 2^87565625 is an apocalyptic number.

It is an amenable number.

87565625 is a deficient number, since it is larger than the sum of its proper divisors (37551367).

87565625 is an frugal number, since it uses more digits than its factorization.

87565625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4035 (or 4015 counting only the distinct ones).

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

The square root of 87565625 is about 9357.6506132683. The cubic root of 87565625 is about 444.0629611361.

The spelling of 87565625 in words is "eighty-seven million, five hundred sixty-five thousand, six hundred twenty-five".