9998025 has 24 divisors (see below), whose sum is σ = 16695360. Its totient is φ = 5279040.

The previous prime is 9998017. The next prime is 9998033. The reversal of 9998025 is 5208999.

It is an interprime number because it is at equal distance from previous prime (9998017) and next prime (9998033).

It is not a de Polignac number, because 9998025 - 2³ = 9998017 is a prime.

9998025 is a lucky number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7564 + ... + 8786.

It is an arithmetic number, because the mean of its divisors is an integer number (695640).

Almost surely, 2^9998025 is an apocalyptic number.

It is an amenable number.

9998025 is a deficient number, since it is larger than the sum of its proper divisors (6697335).

9998025 is a wasteful number, since it uses less digits than its factorization.

9998025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1345 (or 1340 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 42.

The square root of 9998025 is about 3161.9653698293. The cubic root of 9998025 is about 215.4292847076.

The spelling of 9998025 in words is "nine million, nine hundred ninety-eight thousand, twenty-five".