25992972 has 18 divisors (see below), whose sum is σ = 65704548. Its totient is φ = 8664312.

The previous prime is 25992971. The next prime is 25992979. The reversal of 25992972 is 27929952.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (25992971) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 360978 + ... + 361049.

Almost surely, 2^25992972 is an apocalyptic number.

It is an amenable number.

25992972 is an abundant number, since it is smaller than the sum of its proper divisors (39711576).

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

25992972 is a wasteful number, since it uses less digits than its factorization.

25992972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722037 (or 722032 counting only the distinct ones).

The product of its digits is 204120, while the sum is 45.

The square root of 25992972 is about 5098.3303149168. The cubic root of 25992972 is about 296.2229115861. Note that the first 3 decimals are identical.

The spelling of 25992972 in words is "twenty-five million, nine hundred ninety-two thousand, nine hundred seventy-two".