199746425 has 6 divisors (see below), whose sum is σ = 247685598. Its totient is φ = 159797120.

The previous prime is 199746419. The next prime is 199746427. The reversal of 199746425 is 524647991.

It can be written as a sum of positive squares in 3 ways, for example, as 287296 + 199459129 = 536^2 + 14123^2 .

It is not a de Polignac number, because 199746425 - 2⁴ = 199746409 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 199746425.

It is not an unprimeable number, because it can be changed into a prime (199746427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3994904 + ... + 3994953.

It is an arithmetic number, because the mean of its divisors is an integer number (41280933).

Almost surely, 2^199746425 is an apocalyptic number.

It is an amenable number.

199746425 is a deficient number, since it is larger than the sum of its proper divisors (47939173).

199746425 is an equidigital number, since it uses as much as digits as its factorization.

199746425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7989867 (or 7989862 counting only the distinct ones).

The product of its digits is 544320, while the sum is 47.

The square root of 199746425 is about 14133.1675501283. The cubic root of 199746425 is about 584.5562905167.

The spelling of 199746425 in words is "one hundred ninety-nine million, seven hundred forty-six thousand, four hundred twenty-five".