25804572 has 24 divisors (see below), whose sum is σ = 63752976. Its totient is φ = 8095488.

The previous prime is 25804553. The next prime is 25804573. The reversal of 25804572 is 27540852.

It is a super-2 number, since 2×25804572² = 1331751872206368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25804573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63043 + ... + 63450.

It is an arithmetic number, because the mean of its divisors is an integer number (2656374).

Almost surely, 2^25804572 is an apocalyptic number.

It is an amenable number.

25804572 is an abundant number, since it is smaller than the sum of its proper divisors (37948404).

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

25804572 is a wasteful number, since it uses less digits than its factorization.

25804572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126517 (or 126515 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 33.

The square root of 25804572 is about 5079.8200755539. The cubic root of 25804572 is about 295.5054897472.

The spelling of 25804572 in words is "twenty-five million, eight hundred four thousand, five hundred seventy-two".