199825925 has 12 divisors (see below), whose sum is σ = 266844900. Its totient is φ = 147563520.

The previous prime is 199825877. The next prime is 199825943. The reversal of 199825925 is 529528991.

It can be written as a sum of positive squares in 6 ways, for example, as 7365796 + 192460129 = 2714^2 + 13873^2 .

It is not a de Polignac number, because 199825925 - 2⁸ = 199825669 is a prime.

It is a congruent 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, 307100 + ... + 307749.

It is an arithmetic number, because the mean of its divisors is an integer number (22237075).

Almost surely, 2^199825925 is an apocalyptic number.

It is an amenable number.

199825925 is a deficient number, since it is larger than the sum of its proper divisors (67018975).

199825925 is a wasteful number, since it uses less digits than its factorization.

199825925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614872 (or 614867 counting only the distinct ones).

The product of its digits is 583200, while the sum is 50.

The square root of 199825925 is about 14135.9798033246. The cubic root of 199825925 is about 584.6338322651.

The spelling of 199825925 in words is "one hundred ninety-nine million, eight hundred twenty-five thousand, nine hundred twenty-five".