90279025 has 12 divisors (see below), whose sum is σ = 116813952. Its totient is φ = 69082640.

The previous prime is 90279023. The next prime is 90279029. The reversal of 90279025 is 52097209.

It is not a de Polignac number, because 90279025 - 2¹ = 90279023 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90279023) 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, 77929 + ... + 79078.

It is an arithmetic number, because the mean of its divisors is an integer number (9734496).

Almost surely, 2^90279025 is an apocalyptic number.

It is an amenable number.

90279025 is a deficient number, since it is larger than the sum of its proper divisors (26534927).

90279025 is a wasteful number, since it uses less digits than its factorization.

90279025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157040 (or 157035 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 90279025 is about 9501.5275087746. The cubic root of 90279025 is about 448.6031168631.

The spelling of 90279025 in words is "ninety million, two hundred seventy-nine thousand, twenty-five".