90623925 has 72 divisors (see below), whose sum is σ = 187172544. Its totient is φ = 41057280.

The previous prime is 90623891. The next prime is 90623947. The reversal of 90623925 is 52932609.

90623925 is a `hidden beast` number, since 9 + 0 + 623 + 9 + 25 = 666.

It is not a de Polignac number, because 90623925 - 2⁶ = 90623861 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 90623925.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 256549 + ... + 256901.

Almost surely, 2^90623925 is an apocalyptic number.

It is an amenable number.

90623925 is an abundant number, since it is smaller than the sum of its proper divisors (96548619).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90623925 is a wasteful number, since it uses less digits than its factorization.

90623925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539 (or 531 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 90623925 is about 9519.6599203963. The cubic root of 90623925 is about 449.1736687287.

The spelling of 90623925 in words is "ninety million, six hundred twenty-three thousand, nine hundred twenty-five".