9916625 has 8 divisors (see below), whose sum is σ = 12376104. Its totient is φ = 7933200.

The previous prime is 9916619. The next prime is 9916631. The reversal of 9916625 is 5266199.

9916625 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (9916619) and next prime (9916631).

It can be written as a sum of positive squares in 4 ways, for example, as 528529 + 9388096 = 727^2 + 3064^2 .

It is not a de Polignac number, because 9916625 - 2⁴ = 9916609 is a prime.

It is a Duffinian number.

It is a Curzon 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 7 ways as a sum of consecutive naturals, for example, 39542 + ... + 39791.

It is an arithmetic number, because the mean of its divisors is an integer number (1547013).

Almost surely, 2^9916625 is an apocalyptic number.

It is an amenable number.

9916625 is a deficient number, since it is larger than the sum of its proper divisors (2459479).

9916625 is an equidigital number, since it uses as much as digits as its factorization.

9916625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79348 (or 79338 counting only the distinct ones).

The product of its digits is 29160, while the sum is 38.

The square root of 9916625 is about 3149.0673222400. The cubic root of 9916625 is about 214.8430439095.

The spelling of 9916625 in words is "nine million, nine hundred sixteen thousand, six hundred twenty-five".