87591625 has 16 divisors (see below), whose sum is σ = 119253888. Its totient is φ = 63702000.

The previous prime is 87591619. The next prime is 87591631. The reversal of 87591625 is 52619578.

It is an interprime number because it is at equal distance from previous prime (87591619) and next prime (87591631).

It is a de Polignac number, because none of the positive numbers 2^k-87591625 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30477 + ... + 33226.

It is an arithmetic number, because the mean of its divisors is an integer number (7453368).

Almost surely, 2^87591625 is an apocalyptic number.

It is an amenable number.

87591625 is a deficient number, since it is larger than the sum of its proper divisors (31662263).

87591625 is a wasteful number, since it uses less digits than its factorization.

87591625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63729 (or 63719 counting only the distinct ones).

The product of its digits is 151200, while the sum is 43.

The square root of 87591625 is about 9359.0397477519. The cubic root of 87591625 is about 444.1069072031.

The spelling of 87591625 in words is "eighty-seven million, five hundred ninety-one thousand, six hundred twenty-five".