9816225 has 24 divisors (see below), whose sum is σ = 17186400. Its totient is φ = 4926720.

The previous prime is 9816221. The next prime is 9816227. The reversal of 9816225 is 5226189.

It is not a de Polignac number, because 9816225 - 2² = 9816221 is a prime.

9816225 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9816221) 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, 2575 + ... + 5124.

It is an arithmetic number, because the mean of its divisors is an integer number (716100).

Almost surely, 2^9816225 is an apocalyptic number.

It is an amenable number.

9816225 is a deficient number, since it is larger than the sum of its proper divisors (7370175).

9816225 is a wasteful number, since it uses less digits than its factorization.

9816225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7729 (or 7724 counting only the distinct ones).

The product of its digits is 8640, while the sum is 33.

The square root of 9816225 is about 3133.0855398473. The cubic root of 9816225 is about 214.1155299559.

The spelling of 9816225 in words is "nine million, eight hundred sixteen thousand, two hundred twenty-five".