198279125 has 16 divisors (see below), whose sum is σ = 269949888. Its totient is φ = 144202000.

The previous prime is 198279101. The next prime is 198279127. The reversal of 198279125 is 521972891.

It is a happy number.

It is not a de Polignac number, because 198279125 - 2¹⁴ = 198262741 is a prime.

It is a super-2 number, since 2×198279125² = 78629222821531250, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198279127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70727 + ... + 73476.

It is an arithmetic number, because the mean of its divisors is an integer number (16871868).

Almost surely, 2^198279125 is an apocalyptic number.

It is an amenable number.

198279125 is a deficient number, since it is larger than the sum of its proper divisors (71670763).

198279125 is a wasteful number, since it uses less digits than its factorization.

198279125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144229 (or 144219 counting only the distinct ones).

The product of its digits is 90720, while the sum is 44.

The square root of 198279125 is about 14081.1620614209. The cubic root of 198279125 is about 583.1214241623.

The spelling of 198279125 in words is "one hundred ninety-eight million, two hundred seventy-nine thousand, one hundred twenty-five".