25365081 has 16 divisors (see below), whose sum is σ = 39287168. Its totient is φ = 14256000.

The previous prime is 25365047. The next prime is 25365097. The reversal of 25365081 is 18056352.

It is not a de Polignac number, because 25365081 - 2¹⁵ = 25332313 is a prime.

It is a super-2 number, since 2×25365081² = 1286774668273122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25365001) 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, 8620 + ... + 11181.

It is an arithmetic number, because the mean of its divisors is an integer number (2455448).

Almost surely, 2^25365081 is an apocalyptic number.

25365081 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

25365081 is a deficient number, since it is larger than the sum of its proper divisors (13922087).

25365081 is a wasteful number, since it uses less digits than its factorization.

25365081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19872.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 25365081 is about 5036.3757802610. The cubic root of 25365081 is about 293.8182388019.

Subtracting from 25365081 its product of nonzero digits (7200), we obtain a triangular number (25357881 = T₇₁₂₁).

The spelling of 25365081 in words is "twenty-five million, three hundred sixty-five thousand, eighty-one".