9172725 has 48 divisors (see below), whose sum is σ = 16457280. Its totient is φ = 4492800.

The previous prime is 9172721. The next prime is 9172727. The reversal of 9172725 is 5272719.

9172725 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9172725 - 2² = 9172721 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9172721) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 58347 + ... + 58503.

It is an arithmetic number, because the mean of its divisors is an integer number (342860).

Almost surely, 2^9172725 is an apocalyptic number.

9172725 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

It is an amenable number.

9172725 is a deficient number, since it is larger than the sum of its proper divisors (7284555).

9172725 is a wasteful number, since it uses less digits than its factorization.

9172725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230 (or 225 counting only the distinct ones).

The product of its digits is 8820, while the sum is 33.

The square root of 9172725 is about 3028.6506896636. The cubic root of 9172725 is about 209.3306351386.

The spelling of 9172725 in words is "nine million, one hundred seventy-two thousand, seven hundred twenty-five".