87555925 has 6 divisors (see below), whose sum is σ = 108569378. Its totient is φ = 70044720.

The previous prime is 87555907. The next prime is 87555973. The reversal of 87555925 is 52955578.

It can be written as a sum of positive squares in 3 ways, for example, as 2289169 + 85266756 = 1513^2 + 9234^2 .

It is not a de Polignac number, because 87555925 - 2⁵ = 87555893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1751094 + ... + 1751143.

Almost surely, 2^87555925 is an apocalyptic number.

It is an amenable number.

87555925 is a deficient number, since it is larger than the sum of its proper divisors (21013453).

87555925 is a wasteful number, since it uses less digits than its factorization.

87555925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3502247 (or 3502242 counting only the distinct ones).

The product of its digits is 630000, while the sum is 46.

The square root of 87555925 is about 9357.1323064281. The cubic root of 87555925 is about 444.0465636445.

The spelling of 87555925 in words is "eighty-seven million, five hundred fifty-five thousand, nine hundred twenty-five".