86636525 has 12 divisors (see below), whose sum is σ = 108118452. Its totient is φ = 68864640.

The previous prime is 86636521. The next prime is 86636527. The reversal of 86636525 is 52563668.

It can be written as a sum of positive squares in 6 ways, for example, as 276676 + 86359849 = 526^2 + 9293^2 .

It is not a de Polignac number, because 86636525 - 2² = 86636521 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86636521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7112 + ... + 14961.

It is an arithmetic number, because the mean of its divisors is an integer number (9009871).

Almost surely, 2^86636525 is an apocalyptic number.

It is an amenable number.

86636525 is a deficient number, since it is larger than the sum of its proper divisors (21481927).

86636525 is a wasteful number, since it uses less digits than its factorization.

86636525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22240 (or 22235 counting only the distinct ones).

The product of its digits is 259200, while the sum is 41.

The square root of 86636525 is about 9307.8743545452. The cubic root of 86636525 is about 442.4868222533.

The spelling of 86636525 in words is "eighty-six million, six hundred thirty-six thousand, five hundred twenty-five".