198511125 has 32 divisors (see below), whose sum is σ = 349764480. Its totient is φ = 99641600.

The previous prime is 198511111. The next prime is 198511139. The reversal of 198511125 is 521115891.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (198511111) and next prime (198511139).

It is not a de Polignac number, because 198511125 - 2⁴ = 198511109 is a prime.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9195 + ... + 21944.

It is an arithmetic number, because the mean of its divisors is an integer number (10930140).

Almost surely, 2^198511125 is an apocalyptic number.

198511125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

198511125 is a deficient number, since it is larger than the sum of its proper divisors (151253355).

198511125 is a wasteful number, since it uses less digits than its factorization.

198511125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31174 (or 31164 counting only the distinct ones).

The product of its digits is 3600, while the sum is 33.

The square root of 198511125 is about 14089.3976095502. The cubic root of 198511125 is about 583.3487660316.

The spelling of 198511125 in words is "one hundred ninety-eight million, five hundred eleven thousand, one hundred twenty-five".