195308725 has 6 divisors (see below), whose sum is σ = 242182850. Its totient is φ = 156246960.

The previous prime is 195308723. The next prime is 195308741. The reversal of 195308725 is 527803591.

195308725 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 69105969 + 126202756 = 8313^2 + 11234^2 .

It is not a de Polignac number, because 195308725 - 2¹ = 195308723 is a prime.

It is a super-2 number, since 2×195308725² = 76290996122251250, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195308723) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3906150 + ... + 3906199.

Almost surely, 2^195308725 is an apocalyptic number.

It is an amenable number.

195308725 is a deficient number, since it is larger than the sum of its proper divisors (46874125).

195308725 is an equidigital number, since it uses as much as digits as its factorization.

195308725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7812359 (or 7812354 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 40.

The square root of 195308725 is about 13975.2898002152. The cubic root of 195308725 is about 580.1948661513.

The spelling of 195308725 in words is "one hundred ninety-five million, three hundred eight thousand, seven hundred twenty-five".