173168338225 has 9 divisors (see below), whose sum is σ = 214731319467. Its totient is φ = 138533006040.

The previous prime is 173168338223. The next prime is 173168338271. The reversal of 173168338225 is 522833861371.

The square root of 173168338225 is 416135.

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

It can be written as a sum of positive squares in only one way, i.e., 62340601761 + 110827736464 = 249681^2 + 332908^2 .

It is not a de Polignac number, because 173168338225 - 2¹ = 173168338223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (173168338223) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2039062 + ... + 2122288.

Almost surely, 2^173168338225 is an apocalyptic number.

173168338225 is the 416135-th square number.

173168338225 is the 208068-th centered octagonal number.

It is an amenable number.

173168338225 is a deficient number, since it is larger than the sum of its proper divisors (41562981242).

173168338225 is an frugal number, since it uses more digits than its factorization.

173168338225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166464 (or 83232 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 49.

Multiplying 173168338225 by its sum of digits (49), we get a square (8485248573025 = 2912945²).

The spelling of 173168338225 in words is "one hundred seventy-three billion, one hundred sixty-eight million, three hundred thirty-eight thousand, two hundred twenty-five".