9906824225 has 24 divisors (see below), whose sum is σ = 12895722240. Its totient is φ = 7539768000.

The previous prime is 9906824209. The next prime is 9906824227. The reversal of 9906824225 is 5224286099.

It is not a de Polignac number, because 9906824225 - 2⁴ = 9906824209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9906824225.

It is not an unprimeable number, because it can be changed into a prime (9906824227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62606 + ... + 154055.

It is an arithmetic number, because the mean of its divisors is an integer number (537321760).

Almost surely, 2^9906824225 is an apocalyptic number.

It is an amenable number.

9906824225 is a deficient number, since it is larger than the sum of its proper divisors (2988898015).

9906824225 is a wasteful number, since it uses less digits than its factorization.

9906824225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216761 (or 216756 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 47.

The square root of 9906824225 is about 99533.0308239431. The cubic root of 9906824225 is about 2147.7224285939.

The spelling of 9906824225 in words is "nine billion, nine hundred six million, eight hundred twenty-four thousand, two hundred twenty-five".