86397525 has 36 divisors (see below), whose sum is σ = 160095780. Its totient is φ = 44486400.

The previous prime is 86397497. The next prime is 86397539. The reversal of 86397525 is 52579368.

It is a happy number.

86397525 is a `hidden beast` number, since 8 + 639 + 7 + 5 + 2 + 5 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 4422609 + 81974916 = 2103^2 + 9054^2 .

It is not a de Polignac number, because 86397525 - 2⁶ = 86397461 is a prime.

It is a super-2 number, since 2×86397525² = 14929064652251250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 96 + ... + 13145.

It is an arithmetic number, because the mean of its divisors is an integer number (4447105).

Almost surely, 2^86397525 is an apocalyptic number.

It is an amenable number.

86397525 is a deficient number, since it is larger than the sum of its proper divisors (73698255).

86397525 is a wasteful number, since it uses less digits than its factorization.

86397525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13286 (or 13278 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The square root of 86397525 is about 9295.0268961418. The cubic root of 86397525 is about 442.0795585104.

The spelling of 86397525 in words is "eighty-six million, three hundred ninety-seven thousand, five hundred twenty-five".