172768825 has 12 divisors (see below), whose sum is σ = 214409020. Its totient is φ = 138101760.

The previous prime is 172768811. The next prime is 172768829. The reversal of 172768825 is 528867271.

172768825 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 6 ways, for example, as 82944 + 172685881 = 288^2 + 13141^2 .

It is not a de Polignac number, because 172768825 - 2¹³ = 172760633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (172768829) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42481 + ... + 46369.

Almost surely, 2^172768825 is an apocalyptic number.

It is an amenable number.

172768825 is a deficient number, since it is larger than the sum of its proper divisors (41640195).

172768825 is a wasteful number, since it uses less digits than its factorization.

172768825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5676 (or 5671 counting only the distinct ones).

The product of its digits is 376320, while the sum is 46.

The square root of 172768825 is about 13144.1555453365. The cubic root of 172768825 is about 556.9571622940.

The spelling of 172768825 in words is "one hundred seventy-two million, seven hundred sixty-eight thousand, eight hundred twenty-five".