172380927225 has 48 divisors (see below), whose sum is σ = 312717609792. Its totient is φ = 83263215360.

The previous prime is 172380927161. The next prime is 172380927227. The reversal of 172380927225 is 522729083271.

It is not a de Polignac number, because 172380927225 - 2⁶ = 172380927161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (172380927227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1616259 + ... + 1719608.

It is an arithmetic number, because the mean of its divisors is an integer number (6514950204).

Almost surely, 2^172380927225 is an apocalyptic number.

172380927225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

172380927225 is a deficient number, since it is larger than the sum of its proper divisors (140336682567).

172380927225 is a wasteful number, since it uses less digits than its factorization.

172380927225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3335946 (or 3335941 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 48.

The spelling of 172380927225 in words is "one hundred seventy-two billion, three hundred eighty million, nine hundred twenty-seven thousand, two hundred twenty-five".