9998625 has 64 divisors (see below), whose sum is σ = 20547072. Its totient is φ = 4204800.

The previous prime is 9998623. The next prime is 9998633. The reversal of 9998625 is 5268999.

It is not a de Polignac number, because 9998625 - 2¹ = 9998623 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9998623) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 33979 + ... + 34271.

It is an arithmetic number, because the mean of its divisors is an integer number (321048).

Almost surely, 2^9998625 is an apocalyptic number.

It is an amenable number.

9998625 is an abundant number, since it is smaller than the sum of its proper divisors (10548447).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9998625 is a wasteful number, since it uses less digits than its factorization.

9998625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331 (or 321 counting only the distinct ones).

The product of its digits is 349920, while the sum is 48.

The square root of 9998625 is about 3162.0602461054. The cubic root of 9998625 is about 215.4335940582.

The spelling of 9998625 in words is "nine million, nine hundred ninety-eight thousand, six hundred twenty-five".