7172425 has 24 divisors (see below), whose sum is σ = 9921240. Its totient is φ = 5107200.

The previous prime is 7172423. The next prime is 7172447. The reversal of 7172425 is 5242717.

It can be written as a sum of positive squares in 12 ways, for example, as 5607424 + 1565001 = 2368^2 + 1251^2 .

It is not a de Polignac number, because 7172425 - 2¹ = 7172423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7172393 and 7172402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7172423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9045 + ... + 9805.

It is an arithmetic number, because the mean of its divisors is an integer number (413385).

Almost surely, 2^7172425 is an apocalyptic number.

It is an amenable number.

7172425 is a deficient number, since it is larger than the sum of its proper divisors (2748815).

7172425 is a wasteful number, since it uses less digits than its factorization.

7172425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813 (or 808 counting only the distinct ones).

The product of its digits is 3920, while the sum is 28.

The square root of 7172425 is about 2678.1383459411. The cubic root of 7172425 is about 192.8510488636.

The spelling of 7172425 in words is "seven million, one hundred seventy-two thousand, four hundred twenty-five".