199925051 has 8 divisors (see below), whose sum is σ = 203589120. Its totient is φ = 196293888.

The previous prime is 199925041. The next prime is 199925053. The reversal of 199925051 is 150529991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 199925051 - 2⁶ = 199924987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199925053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4205 + ... + 20433.

It is an arithmetic number, because the mean of its divisors is an integer number (25448640).

Almost surely, 2^199925051 is an apocalyptic number.

199925051 is a deficient number, since it is larger than the sum of its proper divisors (3664069).

199925051 is a wasteful number, since it uses less digits than its factorization.

199925051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16453.

The product of its (nonzero) digits is 36450, while the sum is 41.

The square root of 199925051 is about 14139.4855281230. The cubic root of 199925051 is about 584.7304877804.

The spelling of 199925051 in words is "one hundred ninety-nine million, nine hundred twenty-five thousand, fifty-one".