198632365025 has 6 divisors (see below), whose sum is σ = 246304132662. Its totient is φ = 158905892000.

The previous prime is 198632365021. The next prime is 198632365067. The reversal of 198632365025 is 520563236891.

It can be written as a sum of positive squares in 3 ways, for example, as 9201989329 + 189430375696 = 95927^2 + 435236^2 .

It is not a de Polignac number, because 198632365025 - 2² = 198632365021 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198632365021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3972647276 + ... + 3972647325.

It is an arithmetic number, because the mean of its divisors is an integer number (41050688777).

Almost surely, 2^198632365025 is an apocalyptic number.

It is an amenable number.

198632365025 is a deficient number, since it is larger than the sum of its proper divisors (47671767637).

198632365025 is an equidigital number, since it uses as much as digits as its factorization.

198632365025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7945294611 (or 7945294606 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 50.

The spelling of 198632365025 in words is "one hundred ninety-eight billion, six hundred thirty-two million, three hundred sixty-five thousand, twenty-five".