195642425 has 12 divisors (see below), whose sum is σ = 264651216. Its totient is φ = 142285200.

The previous prime is 195642401. The next prime is 195642463. The reversal of 195642425 is 524246591.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-195642425 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 355439 + ... + 355988.

It is an arithmetic number, because the mean of its divisors is an integer number (22054268).

Almost surely, 2^195642425 is an apocalyptic number.

It is an amenable number.

195642425 is a deficient number, since it is larger than the sum of its proper divisors (69008791).

195642425 is a wasteful number, since it uses less digits than its factorization.

195642425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711448 (or 711443 counting only the distinct ones).

The product of its digits is 86400, while the sum is 38.

The square root of 195642425 is about 13987.2236344458. The cubic root of 195642425 is about 580.5251140105.

The spelling of 195642425 in words is "one hundred ninety-five million, six hundred forty-two thousand, four hundred twenty-five".