195399225 has 72 divisors (see below), whose sum is σ = 404418560. Its totient is φ = 88335360.

The previous prime is 195399203. The next prime is 195399229. The reversal of 195399225 is 522993591.

195399225 is a `hidden beast` number, since 1 + 9 + 539 + 92 + 25 = 666.

It is not a de Polignac number, because 195399225 - 2⁶ = 195399161 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195399229) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 152136 + ... + 153414.

Almost surely, 2^195399225 is an apocalyptic number.

195399225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

195399225 is an abundant number, since it is smaller than the sum of its proper divisors (209019335).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

195399225 is a wasteful number, since it uses less digits than its factorization.

195399225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1399 (or 1391 counting only the distinct ones).

The product of its digits is 218700, while the sum is 45.

The square root of 195399225 is about 13978.5272829437. The cubic root of 195399225 is about 580.2844670764.

The spelling of 195399225 in words is "one hundred ninety-five million, three hundred ninety-nine thousand, two hundred twenty-five".