90125808 has 20 divisors (see below), whose sum is σ = 232825128. Its totient is φ = 30041920.

The previous prime is 90125803. The next prime is 90125813. The reversal of 90125808 is 80852109.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (90125803) and next prime (90125813).

It is a super-2 number, since 2×90125808² = 16245322535305728, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90125801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 938763 + ... + 938858.

Almost surely, 2^90125808 is an apocalyptic number.

It is an amenable number.

90125808 is an abundant number, since it is smaller than the sum of its proper divisors (142699320).

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

90125808 is a wasteful number, since it uses less digits than its factorization.

90125808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1877632 (or 1877626 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 90125808 is about 9493.4613287252. The cubic root of 90125808 is about 448.3491909772.

The spelling of 90125808 in words is "ninety million, one hundred twenty-five thousand, eight hundred eight".