25978244 has 24 divisors (see below), whose sum is σ = 50672160. Its totient is φ = 11581056.

The previous prime is 25978223. The next prime is 25978273. The reversal of 25978244 is 44287952.

It is a super-2 number, since 2×25978244² = 1349738322647072, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8762 + ... + 11345.

It is an arithmetic number, because the mean of its divisors is an integer number (2111340).

Almost surely, 2^25978244 is an apocalyptic number.

It is an amenable number.

25978244 is a deficient number, since it is larger than the sum of its proper divisors (24693916).

25978244 is a wasteful number, since it uses less digits than its factorization.

25978244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20147 (or 20145 counting only the distinct ones).

The product of its digits is 161280, while the sum is 41.

The square root of 25978244 is about 5096.8857158073. The cubic root of 25978244 is about 296.1669529305.

The spelling of 25978244 in words is "twenty-five million, nine hundred seventy-eight thousand, two hundred forty-four".