199241825 has 6 divisors (see below), whose sum is σ = 247059894. Its totient is φ = 159393440.

The previous prime is 199241807. The next prime is 199241827. The reversal of 199241825 is 528142991.

It can be written as a sum of positive squares in 3 ways, for example, as 2007889 + 197233936 = 1417^2 + 14044^2 .

It is not a de Polignac number, because 199241825 - 2⁸ = 199241569 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (199241827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3984812 + ... + 3984861.

It is an arithmetic number, because the mean of its divisors is an integer number (41176649).

Almost surely, 2^199241825 is an apocalyptic number.

It is an amenable number.

199241825 is a deficient number, since it is larger than the sum of its proper divisors (47818069).

199241825 is an equidigital number, since it uses as much as digits as its factorization.

199241825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7969683 (or 7969678 counting only the distinct ones).

The product of its digits is 51840, while the sum is 41.

The square root of 199241825 is about 14115.3046371660. The cubic root of 199241825 is about 584.0636395041.

The spelling of 199241825 in words is "one hundred ninety-nine million, two hundred forty-one thousand, eight hundred twenty-five".