199946425 has 24 divisors (see below), whose sum is σ = 287598656. Its totient is φ = 135051840.

The previous prime is 199946363. The next prime is 199946441. The reversal of 199946425 is 524649991.

It is not a de Polignac number, because 199946425 - 2¹¹ = 199944377 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 (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3199 + ... + 20251.

Almost surely, 2^199946425 is an apocalyptic number.

It is an amenable number.

199946425 is a deficient number, since it is larger than the sum of its proper divisors (87652231).

199946425 is a wasteful number, since it uses less digits than its factorization.

199946425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17137 (or 17132 counting only the distinct ones).

The product of its digits is 699840, while the sum is 49.

The square root of 199946425 is about 14140.2413345742. The cubic root of 199946425 is about 584.7513248958.

The spelling of 199946425 in words is "one hundred ninety-nine million, nine hundred forty-six thousand, four hundred twenty-five".