25972220 has 12 divisors (see below), whose sum is σ = 54541704. Its totient is φ = 10388880.

The previous prime is 25972211. The next prime is 25972237. The reversal of 25972220 is 2227952.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 649286 + ... + 649325.

It is an arithmetic number, because the mean of its divisors is an integer number (4545142).

Almost surely, 2^25972220 is an apocalyptic number.

25972220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25972220 is an abundant number, since it is smaller than the sum of its proper divisors (28569484).

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

25972220 is a wasteful number, since it uses less digits than its factorization.

25972220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1298620 (or 1298618 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 25972220 is about 5096.2947324502. The cubic root of 25972220 is about 296.1440588036.

The spelling of 25972220 in words is "twenty-five million, nine hundred seventy-two thousand, two hundred twenty".