195510725 has 6 divisors (see below), whose sum is σ = 242433330. Its totient is φ = 156408560.

The previous prime is 195510713. The next prime is 195510739. The reversal of 195510725 is 527015591.

195510725 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 7656289 + 187854436 = 2767^2 + 13706^2 .

It is a de Polignac number, because none of the positive numbers 2^k-195510725 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3910190 + ... + 3910239.

It is an arithmetic number, because the mean of its divisors is an integer number (40405555).

Almost surely, 2^195510725 is an apocalyptic number.

It is an amenable number.

195510725 is a deficient number, since it is larger than the sum of its proper divisors (46922605).

195510725 is an equidigital number, since it uses as much as digits as its factorization.

195510725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7820439 (or 7820434 counting only the distinct ones).

The product of its (nonzero) digits is 15750, while the sum is 35.

The square root of 195510725 is about 13982.5149740667. The cubic root of 195510725 is about 580.3948213441.

The spelling of 195510725 in words is "one hundred ninety-five million, five hundred ten thousand, seven hundred twenty-five".