25565265 has 24 divisors (see below), whose sum is σ = 48342528. Its totient is φ = 12395040.

The previous prime is 25565249. The next prime is 25565273. The reversal of 25565265 is 56256552.

It is not a de Polignac number, because 25565265 - 2⁴ = 25565249 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25329 + ... + 26318.

It is an arithmetic number, because the mean of its divisors is an integer number (2014272).

Almost surely, 2^25565265 is an apocalyptic number.

It is an amenable number.

25565265 is a deficient number, since it is larger than the sum of its proper divisors (22777263).

25565265 is a wasteful number, since it uses less digits than its factorization.

25565265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51669 (or 51666 counting only the distinct ones).

The product of its digits is 90000, while the sum is 36.

The square root of 25565265 is about 5056.2105375469. The cubic root of 25565265 is about 294.5891628563.

The spelling of 25565265 in words is "twenty-five million, five hundred sixty-five thousand, two hundred sixty-five".