25512265 has 4 divisors (see below), whose sum is σ = 30614724. Its totient is φ = 20409808.

The previous prime is 25512251. The next prime is 25512281. The reversal of 25512265 is 56221552.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5253264 + 20259001 = 2292^2 + 4501^2 .

It is a cyclic number.

It is not a de Polignac number, because 25512265 - 2⁹ = 25511753 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2551222 + ... + 2551231.

It is an arithmetic number, because the mean of its divisors is an integer number (7653681).

Almost surely, 2^25512265 is an apocalyptic number.

It is an amenable number.

25512265 is a deficient number, since it is larger than the sum of its proper divisors (5102459).

25512265 is an equidigital number, since it uses as much as digits as its factorization.

25512265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5102458.

The product of its digits is 6000, while the sum is 28.

The square root of 25512265 is about 5050.9667391500. The cubic root of 25512265 is about 294.3854485918.

The spelling of 25512265 in words is "twenty-five million, five hundred twelve thousand, two hundred sixty-five".