9907825 has 12 divisors (see below), whose sum is σ = 12820608. Its totient is φ = 7581200.

The previous prime is 9907819. The next prime is 9907841. The reversal of 9907825 is 5287099.

It is not a de Polignac number, because 9907825 - 2⁷ = 9907697 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent 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 11 ways as a sum of consecutive naturals, for example, 8041 + ... + 9190.

It is an arithmetic number, because the mean of its divisors is an integer number (1068384).

Almost surely, 2^9907825 is an apocalyptic number.

It is an amenable number.

9907825 is a deficient number, since it is larger than the sum of its proper divisors (2912783).

9907825 is a wasteful number, since it uses less digits than its factorization.

9907825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17264 (or 17259 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 9907825 is about 3147.6697730226. The cubic root of 9907825 is about 214.7794746237.

The spelling of 9907825 in words is "nine million, nine hundred seven thousand, eight hundred twenty-five".