172155325 has 6 divisors (see below), whose sum is σ = 213472634. Its totient is φ = 137724240.

The previous prime is 172155317. The next prime is 172155337. The reversal of 172155325 is 523551271.

172155325 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 3 ways, for example, as 57108249 + 115047076 = 7557^2 + 10726^2 .

It is not a de Polignac number, because 172155325 - 2³ = 172155317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3443082 + ... + 3443131.

Almost surely, 2^172155325 is an apocalyptic number.

It is an amenable number.

172155325 is a deficient number, since it is larger than the sum of its proper divisors (41317309).

172155325 is an equidigital number, since it uses as much as digits as its factorization.

172155325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6886223 (or 6886218 counting only the distinct ones).

The product of its digits is 10500, while the sum is 31.

The square root of 172155325 is about 13120.7974224130. The cubic root of 172155325 is about 556.2971310483.

The spelling of 172155325 in words is "one hundred seventy-two million, one hundred fifty-five thousand, three hundred twenty-five".