25857568 has 24 divisors (see below), whose sum is σ = 55535760. Its totient is φ = 11753280.

The previous prime is 25857563. The next prime is 25857583. The reversal of 25857568 is 86575852.

It is a super-2 number, since 2×25857568² = 1337227645749248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25857563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36378 + ... + 37081.

It is an arithmetic number, because the mean of its divisors is an integer number (2313990).

Almost surely, 2^25857568 is an apocalyptic number.

It is an amenable number.

25857568 is an abundant number, since it is smaller than the sum of its proper divisors (29678192).

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

25857568 is a wasteful number, since it uses less digits than its factorization.

25857568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73480 (or 73472 counting only the distinct ones).

The product of its digits is 672000, while the sum is 46.

The square root of 25857568 is about 5085.0337265352. The cubic root of 25857568 is about 295.7076490155.

It can be divided in two parts, 2585 and 7568, that added together give a triangular number (10153 = T₁₄₂).

The spelling of 25857568 in words is "twenty-five million, eight hundred fifty-seven thousand, five hundred sixty-eight".