90025636 has 12 divisors (see below), whose sum is σ = 159315660. Its totient is φ = 44506880.

The previous prime is 90025619. The next prime is 90025669. The reversal of 90025636 is 63652009.

It can be written as a sum of positive squares in 2 ways, for example, as 14440000 + 75585636 = 3800^2 + 8694^2 .

It is a junction number, because it is equal to n+sod(n) for n = 90025598 and 90025607.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126085 + ... + 126796.

It is an arithmetic number, because the mean of its divisors is an integer number (13276305).

Almost surely, 2^90025636 is an apocalyptic number.

It is an amenable number.

90025636 is a deficient number, since it is larger than the sum of its proper divisors (69290024).

90025636 is a wasteful number, since it uses less digits than its factorization.

90025636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252974 (or 252972 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 90025636 is about 9488.1840201379. The cubic root of 90025636 is about 448.1830207245.

The spelling of 90025636 in words is "ninety million, twenty-five thousand, six hundred thirty-six".