25604596165 has 16 divisors (see below), whose sum is σ = 32163388416. Its totient is φ = 19543708800.

The previous prime is 25604596163. The next prime is 25604596169. The reversal of 25604596165 is 56169540652.

It is not a de Polignac number, because 25604596165 - 2¹ = 25604596163 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25604596163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1152312 + ... + 1174321.

It is an arithmetic number, because the mean of its divisors is an integer number (2010211776).

Almost surely, 2^25604596165 is an apocalyptic number.

It is an amenable number.

25604596165 is a deficient number, since it is larger than the sum of its proper divisors (6558792251).

25604596165 is a wasteful number, since it uses less digits than its factorization.

25604596165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2326740.

The product of its (nonzero) digits is 1944000, while the sum is 49.

The spelling of 25604596165 in words is "twenty-five billion, six hundred four million, five hundred ninety-six thousand, one hundred sixty-five".