198358825 has 12 divisors (see below), whose sum is σ = 281103040. Its totient is φ = 136017360.

The previous prime is 198358817. The next prime is 198358837. The reversal of 198358825 is 528853891.

It is not a de Polignac number, because 198358825 - 2³ = 198358817 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, 566565 + ... + 566914.

Almost surely, 2^198358825 is an apocalyptic number.

It is an amenable number.

198358825 is a deficient number, since it is larger than the sum of its proper divisors (82744215).

198358825 is a wasteful number, since it uses less digits than its factorization.

198358825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133496 (or 1133491 counting only the distinct ones).

The product of its digits is 691200, while the sum is 49.

The square root of 198358825 is about 14083.9917992024. The cubic root of 198358825 is about 583.1995439205.

The spelling of 198358825 in words is "one hundred ninety-eight million, three hundred fifty-eight thousand, eight hundred twenty-five".