17972495125 has 48 divisors (see below), whose sum is σ = 24343450560. Its totient is φ = 13241592000.

The previous prime is 17972495071. The next prime is 17972495131. The reversal of 17972495125 is 52159427971.

It is not a de Polignac number, because 17972495125 - 2⁷ = 17972494997 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 13920730 + ... + 13922020.

It is an arithmetic number, because the mean of its divisors is an integer number (507155220).

Almost surely, 2^17972495125 is an apocalyptic number.

It is an amenable number.

17972495125 is a deficient number, since it is larger than the sum of its proper divisors (6370955435).

17972495125 is a wasteful number, since it uses less digits than its factorization.

17972495125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1991 (or 1968 counting only the distinct ones).

The product of its digits is 1587600, while the sum is 52.

The spelling of 17972495125 in words is "seventeen billion, nine hundred seventy-two million, four hundred ninety-five thousand, one hundred twenty-five".