173365807254025 has 27 divisors (see below), whose sum is σ = 216182721263583. Its totient is φ = 137916907963200.

The previous prime is 173365807253957. The next prime is 173365807254037. The reversal of 173365807254025 is 520452708563371.

The square root of 173365807254025 is 13166845.

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

It can be written as a sum of positive squares in 13 ways, for example, as 155043263979769 + 18322543274256 = 12451637^2 + 4280484^2 .

It is a de Polignac number, because none of the positive numbers 2^k-173365807254025 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 11915987451 + ... + 11916001999.

Almost surely, 2^{173365807254025} is an apocalyptic number.

173365807254025 is the 13166845-th square number.

173365807254025 is the 6583423-rd centered octagonal number.

It is an amenable number.

173365807254025 is a deficient number, since it is larger than the sum of its proper divisors (42816914009558).

173365807254025 is an frugal number, since it uses more digits than its factorization.

173365807254025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29470 (or 14735 counting only the distinct ones).

The product of its (nonzero) digits is 42336000, while the sum is 58.

The spelling of 173365807254025 in words is "one hundred seventy-three trillion, three hundred sixty-five billion, eight hundred seven million, two hundred fifty-four thousand, twenty-five".