90257025 has 24 divisors (see below), whose sum is σ = 149709664. Its totient is φ = 47980800.

The previous prime is 90257021. The next prime is 90257033. The reversal of 90257025 is 52075209.

It is a happy number.

It is not a de Polignac number, because 90257025 - 2² = 90257021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90256983 and 90257001.

It is not an unprimeable number, because it can be changed into a prime (90257021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23490 + ... + 27060.

Almost surely, 2^90257025 is an apocalyptic number.

It is an amenable number.

90257025 is a deficient number, since it is larger than the sum of its proper divisors (59452639).

90257025 is a wasteful number, since it uses less digits than its factorization.

90257025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3921 (or 3916 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 90257025 is about 9500.3697296474. The cubic root of 90257025 is about 448.5666740299.

The spelling of 90257025 in words is "ninety million, two hundred fifty-seven thousand, twenty-five".