90446625 has 40 divisors (see below), whose sum is σ = 168638184. Its totient is φ = 48232800.

The previous prime is 90446617. The next prime is 90446641. The reversal of 90446625 is 52664409.

It can be written as a sum of positive squares in 4 ways, for example, as 10093329 + 80353296 = 3177^2 + 8964^2 .

It is not a de Polignac number, because 90446625 - 2³ = 90446617 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90446625.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5659 + ... + 14591.

Almost surely, 2^90446625 is an apocalyptic number.

It is an amenable number.

90446625 is a deficient number, since it is larger than the sum of its proper divisors (78191559).

90446625 is an equidigital number, since it uses as much as digits as its factorization.

90446625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8960 (or 8941 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 90446625 is about 9510.3430537494. The cubic root of 90446625 is about 448.8805508282.

The spelling of 90446625 in words is "ninety million, four hundred forty-six thousand, six hundred twenty-five".