9666225 has 18 divisors (see below), whose sum is σ = 17313686. Its totient is φ = 5155200.

The previous prime is 9666197. The next prime is 9666227. The reversal of 9666225 is 5226669.

It can be written as a sum of positive squares in 3 ways, for example, as 6561 + 9659664 = 81^2 + 3108^2 .

It is not a de Polignac number, because 9666225 - 2⁸ = 9665969 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9666225.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9666227) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 21256 + ... + 21705.

Almost surely, 2^9666225 is an apocalyptic number.

It is an amenable number.

9666225 is a deficient number, since it is larger than the sum of its proper divisors (7647461).

9666225 is a wasteful number, since it uses less digits than its factorization.

9666225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42977 (or 42969 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 9666225 is about 3109.0553227628. The cubic root of 9666225 is about 213.0193065883.

The spelling of 9666225 in words is "nine million, six hundred sixty-six thousand, two hundred twenty-five".