195720625 has 10 divisors (see below), whose sum is σ = 244573274. Its totient is φ = 156576000.

The previous prime is 195720619. The next prime is 195720661. The reversal of 195720625 is 526027591.

It can be written as a sum of positive squares in 5 ways, for example, as 145154304 + 50566321 = 12048^2 + 7111^2 .

It is not a de Polignac number, because 195720625 - 2³ = 195720617 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 155952 + ... + 157201.

Almost surely, 2^195720625 is an apocalyptic number.

It is an amenable number.

195720625 is a deficient number, since it is larger than the sum of its proper divisors (48852649).

195720625 is an frugal number, since it uses more digits than its factorization.

195720625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313173 (or 313158 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 195720625 is about 13990.0187633898. The cubic root of 195720625 is about 580.6024507073.

It can be divided in two parts, 1957206 and 25, that added together give a triangular number (1957231 = T₁₉₇₈).

The spelling of 195720625 in words is "one hundred ninety-five million, seven hundred twenty thousand, six hundred twenty-five".