25170472165 has 16 divisors (see below), whose sum is σ = 32534516736. Its totient is φ = 18639561600.

The previous prime is 25170472127. The next prime is 25170472181. The reversal of 25170472165 is 56127407152.

It is not a de Polignac number, because 25170472165 - 2²⁷ = 25036254437 is a prime.

It is a Duffinian number.

It is a congruent 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, 3526656 + ... + 3533785.

It is an arithmetic number, because the mean of its divisors is an integer number (2033407296).

Almost surely, 2^25170472165 is an apocalyptic number.

It is an amenable number.

25170472165 is a deficient number, since it is larger than the sum of its proper divisors (7364044571).

25170472165 is a wasteful number, since it uses less digits than its factorization.

25170472165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7060500.

The product of its (nonzero) digits is 117600, while the sum is 40.

The spelling of 25170472165 in words is "twenty-five billion, one hundred seventy million, four hundred seventy-two thousand, one hundred sixty-five".