198125825 has 36 divisors (see below), whose sum is σ = 268582140. Its totient is φ = 144789120.

The previous prime is 198125791. The next prime is 198125831. The reversal of 198125825 is 528521891.

It can be written as a sum of positive squares in 6 ways, for example, as 976144 + 197149681 = 988^2 + 14041^2 .

It is not a de Polignac number, because 198125825 - 2⁶ = 198125761 is a prime.

It is a super-3 number, since 3×198125825³ (a number of 26 digits) contains 333 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 261347 + ... + 262103.

It is an arithmetic number, because the mean of its divisors is an integer number (7460615).

Almost surely, 2^198125825 is an apocalyptic number.

It is an amenable number.

198125825 is a deficient number, since it is larger than the sum of its proper divisors (70456315).

198125825 is a wasteful number, since it uses less digits than its factorization.

198125825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834 (or 810 counting only the distinct ones).

The product of its digits is 57600, while the sum is 41.

The square root of 198125825 is about 14075.7175660781. The cubic root of 198125825 is about 582.9711048212.

The spelling of 198125825 in words is "one hundred ninety-eight million, one hundred twenty-five thousand, eight hundred twenty-five".