172910430625 has 15 divisors (see below), whose sum is σ = 216081865263. Its totient is φ = 138320028000.

The previous prime is 172910430619. The next prime is 172910430673. The reversal of 172910430625 is 526034019271.

It is a happy number.

The square root of 172910430625 is 415825.

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

It can be written as a sum of positive squares in 7 ways, for example, as 171103840609 + 1806590016 = 413647^2 + 42504^2 .

It is not a de Polignac number, because 172910430625 - 2⁹ = 172910430113 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 10387309 + ... + 10403941.

Almost surely, 2^172910430625 is an apocalyptic number.

172910430625 is the 415825-th square number.

172910430625 is the 207913-rd centered octagonal number.

It is an amenable number.

172910430625 is a deficient number, since it is larger than the sum of its proper divisors (43171434638).

172910430625 is an frugal number, since it uses more digits than its factorization.

172910430625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33286 (or 16638 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 40.

Adding to 172910430625 its reverse (526034019271), we get a palindrome (698944449896).

The spelling of 172910430625 in words is "one hundred seventy-two billion, nine hundred ten million, four hundred thirty thousand, six hundred twenty-five".