25979996 has 36 divisors (see below), whose sum is σ = 53558568. Its totient is φ = 10993248.

The previous prime is 25979981. The next prime is 25980013. The reversal of 25979996 is 69997952.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15470 + ... + 17066.

It is an arithmetic number, because the mean of its divisors is an integer number (1487738).

Almost surely, 2^25979996 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25979996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26779284).

25979996 is an abundant number, since it is smaller than the sum of its proper divisors (27578572).

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

25979996 is a wasteful number, since it uses less digits than its factorization.

25979996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1698 (or 1689 counting only the distinct ones).

The product of its digits is 2755620, while the sum is 56.

The square root of 25979996 is about 5097.0575825666. The cubic root of 25979996 is about 296.1736107174.

The spelling of 25979996 in words is "twenty-five million, nine hundred seventy-nine thousand, nine hundred ninety-six".