25568320 has 28 divisors (see below), whose sum is σ = 60885324. Its totient is φ = 10227200.

The previous prime is 25568317. The next prime is 25568353. The reversal of 25568320 is 2386552.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 8856576 + 16711744 = 2976^2 + 4088^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39631 + ... + 40270.

Almost surely, 2^25568320 is an apocalyptic number.

25568320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25568320 is an abundant number, since it is smaller than the sum of its proper divisors (35317004).

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

25568320 is an equidigital number, since it uses as much as digits as its factorization.

25568320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79918 (or 79908 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 25568320 is about 5056.5126322397. The cubic root of 25568320 is about 294.6008966684.

The spelling of 25568320 in words is "twenty-five million, five hundred sixty-eight thousand, three hundred twenty".