87397025 has 12 divisors (see below), whose sum is σ = 109334892. Its totient is φ = 69296640.

The previous prime is 87397007. The next prime is 87397061. The reversal of 87397025 is 52079378.

It can be written as a sum of positive squares in 6 ways, for example, as 35153041 + 52243984 = 5929^2 + 7228^2 .

It is a de Polignac number, because none of the positive numbers 2^k-87397025 is a prime.

It is a Duffinian 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, 12644 + ... + 18293.

It is an arithmetic number, because the mean of its divisors is an integer number (9111241).

Almost surely, 2^87397025 is an apocalyptic number.

It is an amenable number.

87397025 is a deficient number, since it is larger than the sum of its proper divisors (21937867).

87397025 is a wasteful number, since it uses less digits than its factorization.

87397025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31060 (or 31055 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 41.

The square root of 87397025 is about 9348.6376012765. The cubic root of 87397025 is about 443.7777764799. Note that the first 5 decimals are identical.

The spelling of 87397025 in words is "eighty-seven million, three hundred ninety-seven thousand, twenty-five".