198669025 has 9 divisors (see below), whose sum is σ = 246437011. Its totient is φ = 158878840.

The previous prime is 198669017. The next prime is 198669041. The reversal of 198669025 is 520966891.

The square root of 198669025 is 14095.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 71520849 + 127148176 = 8457^2 + 11276^2 .

It is not a de Polignac number, because 198669025 - 2³ = 198669017 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 69066 + ... + 71884.

Almost surely, 2^198669025 is an apocalyptic number.

198669025 is the 14095-th square number.

198669025 is the 7048-th centered octagonal number.

It is an amenable number.

198669025 is a deficient number, since it is larger than the sum of its proper divisors (47767986).

198669025 is an frugal number, since it uses more digits than its factorization.

198669025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5648 (or 2824 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 46.

The cubic root of 198669025 is about 583.5033944077.

The spelling of 198669025 in words is "one hundred ninety-eight million, six hundred sixty-nine thousand, twenty-five".