198052578337825 has 12 divisors (see below), whose sum is σ = 245592784722928. Its totient is φ = 158437167454800.

The previous prime is 198052578337813. The next prime is 198052578337829. The reversal of 198052578337825 is 528733875250891.

It is not a de Polignac number, because 198052578337825 - 2³⁵ = 198018218599457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198052578337829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 121554927 + ... + 123173476.

Almost surely, 2^{198052578337825} is an apocalyptic number.

It is an amenable number.

198052578337825 is a deficient number, since it is larger than the sum of its proper divisors (47540206385103).

198052578337825 is a wasteful number, since it uses less digits than its factorization.

198052578337825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244760784 (or 244760779 counting only the distinct ones).

The product of its (nonzero) digits is 1016064000, while the sum is 73.

The spelling of 198052578337825 in words is "one hundred ninety-eight trillion, fifty-two billion, five hundred seventy-eight million, three hundred thirty-seven thousand, eight hundred twenty-five".