25536320 has 28 divisors (see below), whose sum is σ = 60809124. Its totient is φ = 10214400.

The previous prime is 25536307. The next prime is 25536331. The reversal of 25536320 is 2363552.

It can be written as a sum of positive squares in 2 ways, for example, as 7011904 + 18524416 = 2648^2 + 4304^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 25536320.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39581 + ... + 40220.

Almost surely, 2^25536320 is an apocalyptic number.

25536320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25536320 is an abundant number, since it is smaller than the sum of its proper divisors (35272804).

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

25536320 is an equidigital number, since it uses as much as digits as its factorization.

25536320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79818 (or 79808 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 25536320 is about 5053.3474054334. The cubic root of 25536320 is about 294.4779428945.

Adding to 25536320 its reverse (2363552), we get a palindrome (27899872).

The spelling of 25536320 in words is "twenty-five million, five hundred thirty-six thousand, three hundred twenty".