199925425 has 12 divisors (see below), whose sum is σ = 283323136. Its totient is φ = 137091600.

The previous prime is 199925413. The next prime is 199925437. The reversal of 199925425 is 524529991.

It is an interprime number because it is at equal distance from previous prime (199925413) and next prime (199925437).

It is not a de Polignac number, because 199925425 - 2²¹ = 197828273 is a prime.

It is a super-2 number, since 2×199925425² = 79940351122861250, which contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 571041 + ... + 571390.

Almost surely, 2^199925425 is an apocalyptic number.

It is an amenable number.

199925425 is a deficient number, since it is larger than the sum of its proper divisors (83397711).

199925425 is a wasteful number, since it uses less digits than its factorization.

199925425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1142448 (or 1142443 counting only the distinct ones).

The product of its digits is 291600, while the sum is 46.

The square root of 199925425 is about 14139.4987534919. The cubic root of 199925425 is about 584.7308523988.

The spelling of 199925425 in words is "one hundred ninety-nine million, nine hundred twenty-five thousand, four hundred twenty-five".