90125798 has 24 divisors (see below), whose sum is σ = 157975272. Its totient is φ = 38449824.

The previous prime is 90125771. The next prime is 90125801. The reversal of 90125798 is 89752109.

It is a Curzon number.

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 11 ways as a sum of consecutive naturals, for example, 20861 + ... + 24807.

It is an arithmetic number, because the mean of its divisors is an integer number (6582303).

Almost surely, 2^90125798 is an apocalyptic number.

90125798 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

90125798 is a deficient number, since it is larger than the sum of its proper divisors (67849474).

90125798 is a wasteful number, since it uses less digits than its factorization.

90125798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4196 (or 4189 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 41.

The square root of 90125798 is about 9493.4608020468. The cubic root of 90125798 is about 448.3491743949.

The spelling of 90125798 in words is "ninety million, one hundred twenty-five thousand, seven hundred ninety-eight".