9890025 has 24 divisors (see below), whose sum is σ = 16472160. Its totient is φ = 5235840.

The previous prime is 9890017. The next prime is 9890033. The reversal of 9890025 is 5200989.

It is an interprime number because it is at equal distance from previous prime (9890017) and next prime (9890033).

It is not a de Polignac number, because 9890025 - 2³ = 9890017 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11821 + ... + 12629.

It is an arithmetic number, because the mean of its divisors is an integer number (686340).

Almost surely, 2^9890025 is an apocalyptic number.

It is an amenable number.

9890025 is a deficient number, since it is larger than the sum of its proper divisors (6582135).

9890025 is a wasteful number, since it uses less digits than its factorization.

9890025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985 (or 980 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 9890025 is about 3144.8410134695. The cubic root of 9890025 is about 214.6507761321.

The spelling of 9890025 in words is "nine million, eight hundred ninety thousand, twenty-five".