198125 has 10 divisors (see below), whose sum is σ = 248358. Its totient is φ = 158000.
The previous prime is 198109. The next prime is 198127. The reversal of 198125 is 521891.
It is a happy number.
It can be written as a sum of positive squares in 5 ways, for example, as 131044 + 67081 = 362^2 + 259^2 .
It is not a de Polignac number, because 198125 - 24 = 198109 is a prime.
It is a super-3 number, since 3×1981253 = 23331308349609375, which contains 333 as substring.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 198094 and 198103.
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 198125.
It is not an unprimeable number, because it can be changed into a prime (198127) by changing a digit.
It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 467 + ... + 783.
2198125 is an apocalyptic number.
It is an amenable number.
198125 is a deficient number, since it is larger than the sum of its proper divisors (50233).
198125 is an frugal number, since it uses more digits than its factorization.
198125 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 337 (or 322 counting only the distinct ones).
The product of its digits is 720, while the sum is 26.
The square root of 198125 is about 445.1123453691. The cubic root of 198125 is about 58.2970295652.
It can be divided in two parts, 198 and 125, that added together give a palindrome (323).
The spelling of 198125 in words is "one hundred ninety-eight thousand, one hundred twenty-five".
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