25835565 has 32 divisors (see below), whose sum is σ = 47520000. Its totient is φ = 11741184.

The previous prime is 25835533. The next prime is 25835587. The reversal of 25835565 is 56553852.

It is not a de Polignac number, because 25835565 - 2⁵ = 25835533 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 20061 + ... + 21309.

It is an arithmetic number, because the mean of its divisors is an integer number (1485000).

Almost surely, 2^25835565 is an apocalyptic number.

It is an amenable number.

25835565 is a deficient number, since it is larger than the sum of its proper divisors (21684435).

25835565 is a wasteful number, since it uses less digits than its factorization.

25835565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1461.

The product of its digits is 180000, while the sum is 39.

The square root of 25835565 is about 5082.8697602831. The cubic root of 25835565 is about 295.6237496353.

The spelling of 25835565 in words is "twenty-five million, eight hundred thirty-five thousand, five hundred sixty-five".