195257225 has 12 divisors (see below), whose sum is σ = 242902236. Its totient is φ = 155700480.

The previous prime is 195257213. The next prime is 195257263. The reversal of 195257225 is 522752591.

195257225 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 6 ways, for example, as 26543104 + 168714121 = 5152^2 + 12989^2 .

It is not a de Polignac number, because 195257225 - 2¹² = 195253129 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4652 + ... + 20301.

It is an arithmetic number, because the mean of its divisors is an integer number (20241853).

Almost surely, 2^195257225 is an apocalyptic number.

It is an amenable number.

195257225 is a deficient number, since it is larger than the sum of its proper divisors (47645011).

195257225 is a wasteful number, since it uses less digits than its factorization.

With its successor (195257226) it forms an eRAP, since the sums of their prime factors are consecutive (25276 and 25277).

195257225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25276 (or 25271 counting only the distinct ones).

The product of its digits is 63000, while the sum is 38.

The square root of 195257225 is about 13973.4471409169. The cubic root of 195257225 is about 580.1438654219.

The spelling of 195257225 in words is "one hundred ninety-five million, two hundred fifty-seven thousand, two hundred twenty-five".