7172125 has 16 divisors (see below), whose sum is σ = 9028656. Its totient is φ = 5688000.

The previous prime is 7172107. The next prime is 7172131. The reversal of 7172125 is 5212717.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 6320196 + 851929 = 2514^2 + 923^2 .

It is not a de Polignac number, because 7172125 - 2⁵ = 7172093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

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 7172125.

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, 22467 + ... + 22783.

It is an arithmetic number, because the mean of its divisors is an integer number (564291).

Almost surely, 2^7172125 is an apocalyptic number.

It is an amenable number.

7172125 is a deficient number, since it is larger than the sum of its proper divisors (1856531).

7172125 is a wasteful number, since it uses less digits than its factorization.

7172125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513 (or 503 counting only the distinct ones).

The product of its digits is 980, while the sum is 25.

The square root of 7172125 is about 2678.0823362996. The cubic root of 7172125 is about 192.8483600416.

The spelling of 7172125 in words is "seven million, one hundred seventy-two thousand, one hundred twenty-five".