9810225 has 36 divisors (see below), whose sum is σ = 17893200. Its totient is φ = 5136480.

The previous prime is 9810221. The next prime is 9810239. The reversal of 9810225 is 5220189.

It is not a de Polignac number, because 9810225 - 2² = 9810221 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9810221) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 12906 + ... + 13644.

Almost surely, 2^9810225 is an apocalyptic number.

It is an amenable number.

9810225 is a deficient number, since it is larger than the sum of its proper divisors (8082975).

9810225 is a wasteful number, since it uses less digits than its factorization.

9810225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814 (or 806 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 9810225 is about 3132.1278709529. The cubic root of 9810225 is about 214.0718962434.

The spelling of 9810225 in words is "nine million, eight hundred ten thousand, two hundred twenty-five".