198510098225 has 12 divisors (see below), whose sum is σ = 246171511500. Its totient is φ = 158795827200.

The previous prime is 198510098197. The next prime is 198510098263. The reversal of 198510098225 is 522890015891.

It can be written as a sum of positive squares in 6 ways, for example, as 267878689 + 198242219536 = 16367^2 + 445244^2 .

It is not a de Polignac number, because 198510098225 - 2⁶ = 198510098161 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31565 + ... + 630885.

It is an arithmetic number, because the mean of its divisors is an integer number (20514292625).

Almost surely, 2^198510098225 is an apocalyptic number.

It is an amenable number.

198510098225 is a deficient number, since it is larger than the sum of its proper divisors (47661413275).

198510098225 is a wasteful number, since it uses less digits than its factorization.

198510098225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612580 (or 612575 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 50.

The spelling of 198510098225 in words is "one hundred ninety-eight billion, five hundred ten million, ninety-eight thousand, two hundred twenty-five".