9925172 has 6 divisors (see below), whose sum is σ = 17369058. Its totient is φ = 4962584.

The previous prime is 9925171. The next prime is 9925189. The reversal of 9925172 is 2715299.

9925172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 8271376 + 1653796 = 2876^2 + 1286^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9925171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1240643 + ... + 1240650.

It is an arithmetic number, because the mean of its divisors is an integer number (2894843).

Almost surely, 2^9925172 is an apocalyptic number.

It is an amenable number.

9925172 is a deficient number, since it is larger than the sum of its proper divisors (7443886).

9925172 is a wasteful number, since it uses less digits than its factorization.

9925172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2481297 (or 2481295 counting only the distinct ones).

The product of its digits is 11340, while the sum is 35.

The square root of 9925172 is about 3150.4240984350. The cubic root of 9925172 is about 214.9047495872.

It can be divided in two parts, 99 and 25172, that multiplied together give a triangular number (2492028 = T₂₂₃₂).

The spelling of 9925172 in words is "nine million, nine hundred twenty-five thousand, one hundred seventy-two".