25364565 has 12 divisors (see below), whose sum is σ = 43965324. Its totient is φ = 13527744.

The previous prime is 25364543. The next prime is 25364611. The reversal of 25364565 is 56546352.

It is a happy number.

25364565 is a `hidden beast` number, since 2 + 5 + 3 + 645 + 6 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 8398404 + 16966161 = 2898^2 + 4119^2 .

It is not a de Polignac number, because 25364565 - 2⁵ = 25364533 is a prime.

It is a super-2 number, since 2×25364565² = 1286722315278450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 281784 + ... + 281873.

It is an arithmetic number, because the mean of its divisors is an integer number (3663777).

Almost surely, 2^25364565 is an apocalyptic number.

It is an amenable number.

25364565 is a deficient number, since it is larger than the sum of its proper divisors (18600759).

25364565 is a wasteful number, since it uses less digits than its factorization.

25364565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563668 (or 563665 counting only the distinct ones).

The product of its digits is 108000, while the sum is 36.

The square root of 25364565 is about 5036.3245526872. The cubic root of 25364565 is about 293.8162464141.

The spelling of 25364565 in words is "twenty-five million, three hundred sixty-four thousand, five hundred sixty-five".