90636325 has 12 divisors (see below), whose sum is σ = 121034788. Its totient is φ = 66931200.

The previous prime is 90636319. The next prime is 90636361. The reversal of 90636325 is 52363609.

It can be written as a sum of positive squares in 6 ways, for example, as 7935489 + 82700836 = 2817^2 + 9094^2 .

It is not a de Polignac number, because 90636325 - 2³ = 90636317 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, 139116 + ... + 139765.

Almost surely, 2^90636325 is an apocalyptic number.

It is an amenable number.

90636325 is a deficient number, since it is larger than the sum of its proper divisors (30398463).

90636325 is a wasteful number, since it uses less digits than its factorization.

90636325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278904 (or 278899 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 34.

The square root of 90636325 is about 9520.3111818890. The cubic root of 90636325 is about 449.1941544870.

The spelling of 90636325 in words is "ninety million, six hundred thirty-six thousand, three hundred twenty-five".