195888715800625 has 15 divisors (see below), whose sum is σ = 244782976501063. Its totient is φ = 156710692720000.

The previous prime is 195888715800619. The next prime is 195888715800667. The reversal of 195888715800625 is 526008517888591.

The square root of 195888715800625 is 13996025.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 7 ways, for example, as 105688412957169 + 90200302843456 = 10280487^2 + 9497384^2 .

It is not a de Polignac number, because 195888715800625 - 2⁷ = 195888715800497 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 349620705 + ... + 350180545.

Almost surely, 2^{195888715800625} is an apocalyptic number.

195888715800625 is the 13996025-th square number.

195888715800625 is the 6998013-rd centered octagonal number.

It is an amenable number.

195888715800625 is a deficient number, since it is larger than the sum of its proper divisors (48894260700438).

195888715800625 is an frugal number, since it uses more digits than its factorization.

195888715800625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1119702 (or 559846 counting only the distinct ones).

The product of its (nonzero) digits is 387072000, while the sum is 73.

The spelling of 195888715800625 in words is "one hundred ninety-five trillion, eight hundred eighty-eight billion, seven hundred fifteen million, eight hundred thousand, six hundred twenty-five".