9169728089725 has 12 divisors (see below), whose sum is σ = 12994814664544. Its totient is φ = 6287813547120.

The previous prime is 9169728089713. The next prime is 9169728089749. The reversal of 9169728089725 is 5279808279619.

It is not a de Polignac number, because 9169728089725 - 2³⁷ = 9032289136253 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 11 ways as a sum of consecutive naturals, for example, 26199222939 + ... + 26199223288.

Almost surely, 2^{9169728089725} is an apocalyptic number.

It is an amenable number.

9169728089725 is a deficient number, since it is larger than the sum of its proper divisors (3825086574819).

9169728089725 is a wasteful number, since it uses less digits than its factorization.

9169728089725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52398446244 (or 52398446239 counting only the distinct ones).

The product of its (nonzero) digits is 274337280, while the sum is 73.

The spelling of 9169728089725 in words is "nine trillion, one hundred sixty-nine billion, seven hundred twenty-eight million, eighty-nine thousand, seven hundred twenty-five".