172494855625 has 45 divisors (see below), whose sum is σ = 222027176217. Its totient is φ = 133967232000.

The previous prime is 172494855619. The next prime is 172494855683. The reversal of 172494855625 is 526558494271.

The square root of 172494855625 is 415325.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 22 ways, for example, as 159011930169 + 13482925456 = 398763^2 + 116116^2 .

It is not a de Polignac number, because 172494855625 - 2¹⁹ = 172494331337 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 172494855625.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 384175401 + ... + 384175849.

Almost surely, 2^172494855625 is an apocalyptic number.

172494855625 is the 415325-th square number.

172494855625 is the 207663-rd centered octagonal number.

It is an amenable number.

172494855625 is a deficient number, since it is larger than the sum of its proper divisors (49532320592).

172494855625 is an frugal number, since it uses more digits than its factorization.

172494855625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 992 (or 491 counting only the distinct ones).

The product of its digits is 24192000, while the sum is 58.

The spelling of 172494855625 in words is "one hundred seventy-two billion, four hundred ninety-four million, eight hundred fifty-five thousand, six hundred twenty-five".