172326725 has 12 divisors (see below), whose sum is σ = 215762976. Its totient is φ = 136520880.

The previous prime is 172326719. The next prime is 172326733. The reversal of 172326725 is 527623271.

It is not a de Polignac number, because 172326725 - 2⁴ = 172326709 is a prime.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

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 11 ways as a sum of consecutive naturals, for example, 30887 + ... + 36036.

It is an arithmetic number, because the mean of its divisors is an integer number (17980248).

Almost surely, 2^172326725 is an apocalyptic number.

It is an amenable number.

172326725 is a deficient number, since it is larger than the sum of its proper divisors (43436251).

172326725 is a wasteful number, since it uses less digits than its factorization.

172326725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67036 (or 67031 counting only the distinct ones).

The product of its digits is 35280, while the sum is 35.

The square root of 172326725 is about 13127.3274126914. The cubic root of 172326725 is about 556.4816886121.

Adding to 172326725 its reverse (527623271), we get a palindrome (699949996).

The spelling of 172326725 in words is "one hundred seventy-two million, three hundred twenty-six thousand, seven hundred twenty-five".