198134925 has 12 divisors (see below), whose sum is σ = 327583200. Its totient is φ = 105671920.

The previous prime is 198134891. The next prime is 198134929. The reversal of 198134925 is 529431891.

It is a de Polignac number, because none of the positive numbers 2^k-198134925 is a prime.

It is a super-3 number, since 3×198134925³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198134929) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1320825 + ... + 1320974.

It is an arithmetic number, because the mean of its divisors is an integer number (27298600).

Almost surely, 2^198134925 is an apocalyptic number.

198134925 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

198134925 is a deficient number, since it is larger than the sum of its proper divisors (129448275).

198134925 is a wasteful number, since it uses less digits than its factorization.

198134925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2641812 (or 2641807 counting only the distinct ones).

The product of its digits is 77760, while the sum is 42.

The square root of 198134925 is about 14076.0408140926. The cubic root of 198134925 is about 582.9800300515.

The spelling of 198134925 in words is "one hundred ninety-eight million, one hundred thirty-four thousand, nine hundred twenty-five".