90408925 has 6 divisors (see below), whose sum is σ = 112107098. Its totient is φ = 72327120.

The previous prime is 90408911. The next prime is 90408949. The reversal of 90408925 is 52980409.

It can be written as a sum of positive squares in 3 ways, for example, as 481636 + 89927289 = 694^2 + 9483^2 .

It is not a de Polignac number, because 90408925 - 2¹⁹ = 89884637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1808154 + ... + 1808203.

Almost surely, 2^90408925 is an apocalyptic number.

It is an amenable number.

90408925 is a deficient number, since it is larger than the sum of its proper divisors (21698173).

90408925 is a wasteful number, since it uses less digits than its factorization.

90408925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3616367 (or 3616362 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 90408925 is about 9508.3607945849. The cubic root of 90408925 is about 448.8181746347.

The spelling of 90408925 in words is "ninety million, four hundred eight thousand, nine hundred twenty-five".