198725 has 6 divisors (see below), whose sum is σ = 246450. Its totient is φ = 158960.

The previous prime is 198719. The next prime is 198733. The reversal of 198725 is 527891.

It can be written as a sum of positive squares in 3 ways, for example, as 11236 + 187489 = 106^2 + 433^2 .

It is not a de Polignac number, because 198725 - 2⁸ = 198469 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 198691 and 198700.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 198725.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3950 + ... + 3999.

It is an arithmetic number, because the mean of its divisors is an integer number (41075).

2¹⁹⁸⁷²⁵ is an apocalyptic number.

It is an amenable number.

198725 is a deficient number, since it is larger than the sum of its proper divisors (47725).

198725 is an equidigital number, since it uses as much as digits as its factorization.

198725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7959 (or 7954 counting only the distinct ones).

The product of its digits is 5040, while the sum is 32.

The square root of 198725 is about 445.7858230137. The cubic root of 198725 is about 58.3558189958.

The spelling of 198725 in words is "one hundred ninety-eight thousand, seven hundred twenty-five".