25085665 has 16 divisors (see below), whose sum is σ = 33901056. Its totient is φ = 17654400.

The previous prime is 25085651. The next prime is 25085677. The reversal of 25085665 is 56658052.

It is not a de Polignac number, because 25085665 - 2⁵ = 25085633 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5652 + ... + 9061.

It is an arithmetic number, because the mean of its divisors is an integer number (2118816).

Almost surely, 2^25085665 is an apocalyptic number.

It is an amenable number.

25085665 is a deficient number, since it is larger than the sum of its proper divisors (8815391).

25085665 is a wasteful number, since it uses less digits than its factorization.

25085665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14760.

The product of its (nonzero) digits is 72000, while the sum is 37.

The square root of 25085665 is about 5008.5591740540. The cubic root of 25085665 is about 292.7353743784.

The spelling of 25085665 in words is "twenty-five million, eighty-five thousand, six hundred sixty-five".