25536256 has 36 divisors (see below), whose sum is σ = 53201232. Its totient is φ = 12210176.

The previous prime is 25536239. The next prime is 25536257. The reversal of 25536256 is 65263552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25536257) 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, 3720 + ... + 8056.

It is an arithmetic number, because the mean of its divisors is an integer number (1477812).

Almost surely, 2^25536256 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 25536256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26600616).

25536256 is an abundant number, since it is smaller than the sum of its proper divisors (27664976).

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

25536256 is an equidigital number, since it uses as much as digits as its factorization.

25536256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4376 (or 4362 counting only the distinct ones).

The product of its digits is 54000, while the sum is 34.

The square root of 25536256 is about 5053.3410729932. The cubic root of 25536256 is about 294.4776968840.

The spelling of 25536256 in words is "twenty-five million, five hundred thirty-six thousand, two hundred fifty-six".