25566363 has 24 divisors (see below), whose sum is σ = 38911392. Its totient is φ = 16144128.

The previous prime is 25566349. The next prime is 25566383. The reversal of 25566363 is 36366552.

It is not a de Polignac number, because 25566363 - 2⁴ = 25566347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25566383) 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, 22845 + ... + 23937.

It is an arithmetic number, because the mean of its divisors is an integer number (1621308).

Almost surely, 2^25566363 is an apocalyptic number.

25566363 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

25566363 is a deficient number, since it is larger than the sum of its proper divisors (13345029).

25566363 is a wasteful number, since it uses less digits than its factorization.

25566363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1235 (or 1232 counting only the distinct ones).

The product of its digits is 97200, while the sum is 36.

The square root of 25566363 is about 5056.3191157204. The cubic root of 25566363 is about 294.5933802227.

The spelling of 25566363 in words is "twenty-five million, five hundred sixty-six thousand, three hundred sixty-three".