18879025 has 27 divisors (see below), whose sum is σ = 26061483. Its totient is φ = 13556400.

The previous prime is 18879019. The next prime is 18879037. The reversal of 18879025 is 52097881.

The square root of 18879025 is 4345.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 6796449 + 12082576 = 2607^2 + 3476^2 .

It is not a de Polignac number, because 18879025 - 2⁷ = 18878897 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 238936 + ... + 239014.

Almost surely, 2^18879025 is an apocalyptic number.

18879025 is the 4345-th square number.

18879025 is the 2173-rd centered octagonal number.

It is an amenable number.

18879025 is a deficient number, since it is larger than the sum of its proper divisors (7182458).

18879025 is an equidigital number, since it uses as much as digits as its factorization.

18879025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190 (or 95 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 40.

The cubic root of 18879025 is about 266.2726254954.

The spelling of 18879025 in words is "eighteen million, eight hundred seventy-nine thousand, twenty-five".