25252565 has 16 divisors (see below), whose sum is σ = 34555248. Its totient is φ = 17550336.

The previous prime is 25252541. The next prime is 25252603. The reversal of 25252565 is 56525252.

It can be written as a sum of positive squares in 8 ways, for example, as 2193361 + 23059204 = 1481^2 + 4802^2 .

It is a cyclic number.

It is not a de Polignac number, because 25252565 - 2¹⁸ = 24990421 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10322 + ... + 12531.

It is an arithmetic number, because the mean of its divisors is an integer number (2159703).

Almost surely, 2^25252565 is an apocalyptic number.

It is an amenable number.

25252565 is a deficient number, since it is larger than the sum of its proper divisors (9302683).

25252565 is a wasteful number, since it uses less digits than its factorization.

25252565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22888.

The product of its digits is 30000, while the sum is 32.

The square root of 25252565 is about 5025.1930311183. The cubic root of 25252565 is about 293.3831491095.

The spelling of 25252565 in words is "twenty-five million, two hundred fifty-two thousand, five hundred sixty-five".