25565796 has 36 divisors (see below), whose sum is σ = 66204684. Its totient is φ = 8313600.

The previous prime is 25565783. The next prime is 25565797. The reversal of 25565796 is 69756552.

25565796 is a `hidden beast` number, since 2 + 556 + 5 + 7 + 96 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3663396 + 21902400 = 1914^2 + 4680^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×25565796² = 1307219850227232, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25565797) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7185 + ... + 10136.

It is an arithmetic number, because the mean of its divisors is an integer number (1839019).

Almost surely, 2^25565796 is an apocalyptic number.

It is an amenable number.

25565796 is an abundant number, since it is smaller than the sum of its proper divisors (40638888).

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

25565796 is a wasteful number, since it uses less digits than its factorization.

25565796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17372 (or 17367 counting only the distinct ones).

The product of its digits is 567000, while the sum is 45.

The square root of 25565796 is about 5056.2630469547. The cubic root of 25565796 is about 294.5912024174.

The spelling of 25565796 in words is "twenty-five million, five hundred sixty-five thousand, seven hundred ninety-six".