87477925 has 12 divisors (see below), whose sum is σ = 109268676. Its totient is φ = 69468800.

The previous prime is 87477899. The next prime is 87477961. The reversal of 87477925 is 52977478.

It can be written as a sum of positive squares in 6 ways, for example, as 1340964 + 86136961 = 1158^2 + 9281^2 .

It is a de Polignac number, because none of the positive numbers 2^k-87477925 is a prime.

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, 9346 + ... + 16195.

It is an arithmetic number, because the mean of its divisors is an integer number (9105723).

Almost surely, 2^87477925 is an apocalyptic number.

It is an amenable number.

87477925 is a deficient number, since it is larger than the sum of its proper divisors (21790751).

87477925 is a wasteful number, since it uses less digits than its factorization.

87477925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25688 (or 25683 counting only the distinct ones).

The product of its digits is 987840, while the sum is 49.

The square root of 87477925 is about 9352.9634341208. The cubic root of 87477925 is about 443.9146634820.

The spelling of 87477925 in words is "eighty-seven million, four hundred seventy-seven thousand, nine hundred twenty-five".