25813956 has 48 divisors (see below), whose sum is σ = 72890496. Its totient is φ = 6941184.

The previous prime is 25813937. The next prime is 25813999. The reversal of 25813956 is 65931852.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7611 + ... + 10466.

It is an arithmetic number, because the mean of its divisors is an integer number (1518552).

Almost surely, 2^25813956 is an apocalyptic number.

It is an amenable number.

25813956 is an abundant number, since it is smaller than the sum of its proper divisors (47076540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25813956 is a wasteful number, since it uses less digits than its factorization.

25813956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18108 (or 18106 counting only the distinct ones).

The product of its digits is 64800, while the sum is 39.

The square root of 25813956 is about 5080.7436463573. The cubic root of 25813956 is about 295.5413062353.

The spelling of 25813956 in words is "twenty-five million, eight hundred thirteen thousand, nine hundred fifty-six".