198849625 has 24 divisors (see below), whose sum is σ = 268750872. Its totient is φ = 146827200.

The previous prime is 198849613. The next prime is 198849653. The reversal of 198849625 is 526948891.

It can be written as a sum of positive squares in 12 ways, for example, as 143808064 + 55041561 = 11992^2 + 7419^2 .

It is not a de Polignac number, because 198849625 - 2⁹ = 198849113 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16419 + ... + 25831.

It is an arithmetic number, because the mean of its divisors is an integer number (11197953).

Almost surely, 2^198849625 is an apocalyptic number.

It is an amenable number.

198849625 is a deficient number, since it is larger than the sum of its proper divisors (69901247).

198849625 is an equidigital number, since it uses as much as digits as its factorization.

198849625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9454 (or 9431 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 52.

The square root of 198849625 is about 14101.4050718359. The cubic root of 198849625 is about 583.6801520360.

The spelling of 198849625 in words is "one hundred ninety-eight million, eight hundred forty-nine thousand, six hundred twenty-five".