9890925 has 48 divisors (see below), whose sum is σ = 18808320. Its totient is φ = 4536000.

The previous prime is 9890917. The next prime is 9890941. The reversal of 9890925 is 5290989.

It is not a de Polignac number, because 9890925 - 2³ = 9890917 is a prime.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15360 + ... + 15990.

It is an arithmetic number, because the mean of its divisors is an integer number (391840).

Almost surely, 2^9890925 is an apocalyptic number.

9890925 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

It is an amenable number.

9890925 is a deficient number, since it is larger than the sum of its proper divisors (8917395).

9890925 is a wasteful number, since it uses less digits than its factorization.

9890925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674 (or 669 counting only the distinct ones).

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

The square root of 9890925 is about 3144.9841017086. The cubic root of 9890925 is about 214.6572870641.

The spelling of 9890925 in words is "nine million, eight hundred ninety thousand, nine hundred twenty-five".