9665725 has 6 divisors (see below), whose sum is σ = 11985530. Its totient is φ = 7732560.

The previous prime is 9665723. The next prime is 9665731. The reversal of 9665725 is 5275669.

9665725 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 68121 + 9597604 = 261^2 + 3098^2 .

It is not a de Polignac number, because 9665725 - 2¹ = 9665723 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9665723) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 193290 + ... + 193339.

Almost surely, 2^9665725 is an apocalyptic number.

It is an amenable number.

9665725 is a deficient number, since it is larger than the sum of its proper divisors (2319805).

9665725 is a wasteful number, since it uses less digits than its factorization.

9665725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386639 (or 386634 counting only the distinct ones).

The product of its digits is 113400, while the sum is 40.

The square root of 9665725 is about 3108.9749114459. The cubic root of 9665725 is about 213.0156336105.

The spelling of 9665725 in words is "nine million, six hundred sixty-five thousand, seven hundred twenty-five".