198725425 has 6 divisors (see below), whose sum is σ = 246419558. Its totient is φ = 158980320.

The previous prime is 198725413. The next prime is 198725437. The reversal of 198725425 is 524527891.

It is an interprime number because it is at equal distance from previous prime (198725413) and next prime (198725437).

It can be written as a sum of positive squares in 3 ways, for example, as 16 + 198725409 = 4^2 + 14097^2 .

It is not a de Polignac number, because 198725425 - 2⁹ = 198724913 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3974484 + ... + 3974533.

Almost surely, 2^198725425 is an apocalyptic number.

It is an amenable number.

198725425 is a deficient number, since it is larger than the sum of its proper divisors (47694133).

198725425 is an equidigital number, since it uses as much as digits as its factorization.

198725425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7949027 (or 7949022 counting only the distinct ones).

The product of its digits is 201600, while the sum is 43.

The square root of 198725425 is about 14097.0005674966. Note that the first 3 decimals coincide. The cubic root of 198725425 is about 583.5586059632.

The spelling of 198725425 in words is "one hundred ninety-eight million, seven hundred twenty-five thousand, four hundred twenty-five".