25536456 has 96 divisors (see below), whose sum is σ = 79466400. Its totient is φ = 7326720.

The previous prime is 25536421. The next prime is 25536457. The reversal of 25536456 is 65463552.

It is a happy number.

25536456 is a `hidden beast` number, since 2 + 5 + 5 + 3 + 645 + 6 = 666.

It is a super-2 number, since 2×25536456² = 1304221170079872, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 25536456.

It is not an unprimeable number, because it can be changed into a prime (25536457) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14200 + ... + 15896.

It is an arithmetic number, because the mean of its divisors is an integer number (827775).

Almost surely, 2^25536456 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 25536456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39733200).

25536456 is an abundant number, since it is smaller than the sum of its proper divisors (53929944).

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

25536456 is a wasteful number, since it uses less digits than its factorization.

25536456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1739 (or 1732 counting only the distinct ones).

The product of its digits is 108000, while the sum is 36.

The square root of 25536456 is about 5053.3608618423. The cubic root of 25536456 is about 294.4784656653.

It can be divided in two parts, 2553 and 6456, that added together give a palindrome (9009).

The spelling of 25536456 in words is "twenty-five million, five hundred thirty-six thousand, four hundred fifty-six".