25363881 has 16 divisors (see below), whose sum is σ = 39787200. Its totient is φ = 15914304.

The previous prime is 25363873. The next prime is 25363883. The reversal of 25363881 is 18836352.

It is not a de Polignac number, because 25363881 - 2³ = 25363873 is a prime.

It is a super-2 number, since 2×25363881² = 1286652918764322, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25363883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27171 + ... + 28088.

It is an arithmetic number, because the mean of its divisors is an integer number (2486700).

Almost surely, 2^25363881 is an apocalyptic number.

It is an amenable number.

25363881 is a deficient number, since it is larger than the sum of its proper divisors (14423319).

25363881 is a wasteful number, since it uses less digits than its factorization.

25363881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55285 (or 55279 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 25363881 is about 5036.2566455652. The cubic root of 25363881 is about 293.8136053001.

It can be divided in two parts, 25363 and 881, that added together give a square (26244 = 162²).

The spelling of 25363881 in words is "twenty-five million, three hundred sixty-three thousand, eight hundred eighty-one".