90492025 has 12 divisors (see below), whose sum is σ = 120842092. Its totient is φ = 66824640.

The previous prime is 90492011. The next prime is 90492029. The reversal of 90492025 is 52029409.

It can be written as a sum of positive squares in 6 ways, for example, as 35093776 + 55398249 = 5924^2 + 7443^2 .

It is not a de Polignac number, because 90492025 - 2⁵ = 90491993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90492029) 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, 138894 + ... + 139543.

Almost surely, 2^90492025 is an apocalyptic number.

It is an amenable number.

90492025 is a deficient number, since it is larger than the sum of its proper divisors (30350067).

90492025 is a wasteful number, since it uses less digits than its factorization.

90492025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278460 (or 278455 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 90492025 is about 9512.7296292915. The cubic root of 90492025 is about 448.9556439864.

It can be divided in two parts, 904 and 92025, that added together give a palindrome (92929).

The spelling of 90492025 in words is "ninety million, four hundred ninety-two thousand, twenty-five".