25826565 has 16 divisors (see below), whose sum is σ = 42656256. Its totient is φ = 13329600.

The previous prime is 25826561. The next prime is 25826573. The reversal of 25826565 is 56562852.

It is a happy number.

It is not a de Polignac number, because 25826565 - 2² = 25826561 is a prime.

It is a super-2 number, since 2×25826565² = 1334022919398450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25826561) 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, 27306 + ... + 28235.

It is an arithmetic number, because the mean of its divisors is an integer number (2666016).

Almost surely, 2^25826565 is an apocalyptic number.

It is an amenable number.

25826565 is a deficient number, since it is larger than the sum of its proper divisors (16829691).

25826565 is a wasteful number, since it uses less digits than its factorization.

25826565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55580.

The product of its digits is 144000, while the sum is 39.

The square root of 25826565 is about 5081.9843565285. The cubic root of 25826565 is about 295.5894181139.

The spelling of 25826565 in words is "twenty-five million, eight hundred twenty-six thousand, five hundred sixty-five".