172164625 has 8 divisors (see below), whose sum is σ = 214861608. Its totient is φ = 137731600.

The previous prime is 172164623. The next prime is 172164649. The reversal of 172164625 is 526461271.

It can be written as a sum of positive squares in 4 ways, for example, as 36954241 + 135210384 = 6079^2 + 11628^2 .

It is not a de Polignac number, because 172164625 - 2¹ = 172164623 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172164623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 688534 + ... + 688783.

It is an arithmetic number, because the mean of its divisors is an integer number (26857701).

Almost surely, 2^172164625 is an apocalyptic number.

It is an amenable number.

172164625 is a deficient number, since it is larger than the sum of its proper divisors (42696983).

172164625 is an equidigital number, since it uses as much as digits as its factorization.

172164625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1377332 (or 1377322 counting only the distinct ones).

The product of its digits is 20160, while the sum is 34.

The square root of 172164625 is about 13121.1518168185. The cubic root of 172164625 is about 556.3071481074.

The spelling of 172164625 in words is "one hundred seventy-two million, one hundred sixty-four thousand, six hundred twenty-five".