172625494193 has 2 divisors, whose sum is σ = 172625494194. Its totient is φ = 172625494192.

The previous prime is 172625494157. The next prime is 172625494201. The reversal of 172625494193 is 391494526271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90810617104 + 81814877089 = 301348^2 + 286033^2 .

It is an emirp because it is prime and its reverse (391494526271) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 172625494193 - 2¹² = 172625490097 is a prime.

It is a super-2 number, since 2×172625494193² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (172625494493) by changing a digit.

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 as a sum of consecutive naturals, namely, 86312747096 + 86312747097.

It is an arithmetic number, because the mean of its divisors is an integer number (86312747097).

Almost surely, 2^172625494193 is an apocalyptic number.

It is an amenable number.

172625494193 is a deficient number, since it is larger than the sum of its proper divisors (1).

172625494193 is an equidigital number, since it uses as much as digits as its factorization.

172625494193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3265920, while the sum is 53.

The spelling of 172625494193 in words is "one hundred seventy-two billion, six hundred twenty-five million, four hundred ninety-four thousand, one hundred ninety-three".