172045648925 has 12 divisors (see below), whose sum is σ = 213349657620. Its totient is φ = 137628097920.

The previous prime is 172045648897. The next prime is 172045648937. The reversal of 172045648925 is 529846540271.

It can be written as a sum of positive squares in 6 ways, for example, as 49502245081 + 122543403844 = 222491^2 + 350062^2 .

It is not a de Polignac number, because 172045648925 - 2¹² = 172045644829 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 223811 + ... + 627839.

It is an arithmetic number, because the mean of its divisors is an integer number (17779138135).

Almost surely, 2^172045648925 is an apocalyptic number.

It is an amenable number.

172045648925 is a deficient number, since it is larger than the sum of its proper divisors (41304008695).

172045648925 is a wasteful number, since it uses less digits than its factorization.

172045648925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421072 (or 421067 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 53.

The spelling of 172045648925 in words is "one hundred seventy-two billion, forty-five million, six hundred forty-eight thousand, nine hundred twenty-five".