25560165 has 32 divisors (see below), whose sum is σ = 42986880. Its totient is φ = 12950784.

The previous prime is 25560137. The next prime is 25560191. The reversal of 25560165 is 56106552.

It is not a de Polignac number, because 25560165 - 2⁵ = 25560133 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28707 + ... + 29583.

It is an arithmetic number, because the mean of its divisors is an integer number (1343340).

Almost surely, 2^25560165 is an apocalyptic number.

It is an amenable number.

25560165 is a deficient number, since it is larger than the sum of its proper divisors (17426715).

25560165 is a wasteful number, since it uses less digits than its factorization.

25560165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 25560165 is about 5055.7061821273. The cubic root of 25560165 is about 294.5695724127.

The spelling of 25560165 in words is "twenty-five million, five hundred sixty thousand, one hundred sixty-five".