172713025 has 6 divisors (see below), whose sum is σ = 214164182. Its totient is φ = 138170400.

The previous prime is 172713011. The next prime is 172713041. The reversal of 172713025 is 520317271.

It can be written as a sum of positive squares in 3 ways, for example, as 13927824 + 158785201 = 3732^2 + 12601^2 .

It is not a de Polignac number, because 172713025 - 2¹¹ = 172710977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 172712984 and 172713002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3454236 + ... + 3454285.

Almost surely, 2^172713025 is an apocalyptic number.

It is an amenable number.

172713025 is a deficient number, since it is larger than the sum of its proper divisors (41451157).

172713025 is an equidigital number, since it uses as much as digits as its factorization.

172713025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6908531 (or 6908526 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 172713025 is about 13142.0327575303. The cubic root of 172713025 is about 556.8971947698.

The spelling of 172713025 in words is "one hundred seventy-two million, seven hundred thirteen thousand, twenty-five".