90621925 has 12 divisors (see below), whose sum is σ = 118286080. Its totient is φ = 68681520.

The previous prime is 90621919. The next prime is 90621929. The reversal of 90621925 is 52912609.

It is not a de Polignac number, because 90621925 - 2²¹ = 88524773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90621929) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94917 + ... + 95866.

Almost surely, 2^90621925 is an apocalyptic number.

90621925 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

It is an amenable number.

90621925 is a deficient number, since it is larger than the sum of its proper divisors (27664155).

90621925 is a wasteful number, since it uses less digits than its factorization.

90621925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190812 (or 190807 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 90621925 is about 9519.5548740474. The cubic root of 90621925 is about 449.1703643991.

The spelling of 90621925 in words is "ninety million, six hundred twenty-one thousand, nine hundred twenty-five".