9898125 has 20 divisors (see below), whose sum is σ = 16494720. Its totient is φ = 5278000.

The previous prime is 9898123. The next prime is 9898139. The reversal of 9898125 is 5218989.

It is a happy number.

It is not a de Polignac number, because 9898125 - 2¹ = 9898123 is a prime.

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9898123) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 765 + ... + 4514.

It is an arithmetic number, because the mean of its divisors is an integer number (824736).

Almost surely, 2^9898125 is an apocalyptic number.

It is an amenable number.

9898125 is a deficient number, since it is larger than the sum of its proper divisors (6596595).

9898125 is an equidigital number, since it uses as much as digits as its factorization.

9898125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5302 (or 5287 counting only the distinct ones).

The product of its digits is 51840, while the sum is 42.

The square root of 9898125 is about 3146.1285733422. The cubic root of 9898125 is about 214.7093603063.

The spelling of 9898125 in words is "nine million, eight hundred ninety-eight thousand, one hundred twenty-five".