25757256 has 64 divisors (see below), whose sum is σ = 74188800. Its totient is φ = 7299648.

The previous prime is 25757243. The next prime is 25757257. The reversal of 25757256 is 65275752.

It is not an unprimeable number, because it can be changed into a prime (25757257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22801 + ... + 23903.

It is an arithmetic number, because the mean of its divisors is an integer number (1159200).

Almost surely, 2^25757256 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 25757256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37094400).

25757256 is an abundant number, since it is smaller than the sum of its proper divisors (48431544).

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

25757256 is a wasteful number, since it uses less digits than its factorization.

25757256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1258 (or 1254 counting only the distinct ones).

The product of its digits is 147000, while the sum is 39.

The square root of 25757256 is about 5075.1606871113. The cubic root of 25757256 is about 295.3247634727.

The spelling of 25757256 in words is "twenty-five million, seven hundred fifty-seven thousand, two hundred fifty-six".