172523182325 has 24 divisors (see below), whose sum is σ = 230810888616. Its totient is φ = 127166112000.

The previous prime is 172523182309. The next prime is 172523182327. The reversal of 172523182325 is 523281325271.

It can be written as a sum of positive squares in 12 ways, for example, as 37494125956 + 135029056369 = 193634^2 + 367463^2 .

It is not a de Polignac number, because 172523182325 - 2⁴ = 172523182309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172523182327) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 314786 + ... + 666435.

It is an arithmetic number, because the mean of its divisors is an integer number (9617120359).

Almost surely, 2^172523182325 is an apocalyptic number.

It is an amenable number.

172523182325 is a deficient number, since it is larger than the sum of its proper divisors (58287706291).

172523182325 is a wasteful number, since it uses less digits than its factorization.

172523182325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981785 (or 981780 counting only the distinct ones).

The product of its digits is 201600, while the sum is 41.

The spelling of 172523182325 in words is "one hundred seventy-two billion, five hundred twenty-three million, one hundred eighty-two thousand, three hundred twenty-five".