199725168 has 20 divisors (see below), whose sum is σ = 515956808. Its totient is φ = 66575040.

The previous prime is 199725151. The next prime is 199725173. The reversal of 199725168 is 861527991.

199725168 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 4160941 = 199725168 / (1 + 9 + 9 + 7 + 2 + 5 + 1 + 6 + 8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2080423 + ... + 2080518.

Almost surely, 2^199725168 is an apocalyptic number.

It is an amenable number.

199725168 is an abundant number, since it is smaller than the sum of its proper divisors (316231640).

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

199725168 is a wasteful number, since it uses less digits than its factorization.

199725168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4160952 (or 4160946 counting only the distinct ones).

The product of its digits is 272160, while the sum is 48.

The square root of 199725168 is about 14132.4155047890. The cubic root of 199725168 is about 584.5355536352.

The spelling of 199725168 in words is "one hundred ninety-nine million, seven hundred twenty-five thousand, one hundred sixty-eight".