9840172925 has 12 divisors (see below), whose sum is σ = 13311070656. Its totient is φ = 7156489200.

The previous prime is 9840172891. The next prime is 9840172957. The reversal of 9840172925 is 5292710489.

It is not a de Polignac number, because 9840172925 - 2⁸ = 9840172669 is a prime.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9840172925.

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, 17890949 + ... + 17891498.

It is an arithmetic number, because the mean of its divisors is an integer number (1109255888).

Almost surely, 2^9840172925 is an apocalyptic number.

It is an amenable number.

9840172925 is a deficient number, since it is larger than the sum of its proper divisors (3470897731).

9840172925 is a wasteful number, since it uses less digits than its factorization.

9840172925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35782468 (or 35782463 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 47.

The square root of 9840172925 is about 99197.6457633950. The cubic root of 9840172925 is about 2142.8950920845.

The spelling of 9840172925 in words is "nine billion, eight hundred forty million, one hundred seventy-two thousand, nine hundred twenty-five".