9840745225 has 6 divisors (see below), whose sum is σ = 12202524110. Its totient is φ = 7872596160.

The previous prime is 9840745207. The next prime is 9840745237. The reversal of 9840745225 is 5225470489.

It can be written as a sum of positive squares in 3 ways, for example, as 5659641 + 9835085584 = 2379^2 + 99172^2 .

It is not a de Polignac number, because 9840745225 - 2⁹ = 9840744713 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 196814880 + ... + 196814929.

Almost surely, 2^9840745225 is an apocalyptic number.

It is an amenable number.

9840745225 is a deficient number, since it is larger than the sum of its proper divisors (2361778885).

9840745225 is a wasteful number, since it uses less digits than its factorization.

9840745225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393629819 (or 393629814 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 46.

The square root of 9840745225 is about 99200.5303665258. The cubic root of 9840745225 is about 2142.9366345485.

The spelling of 9840745225 in words is "nine billion, eight hundred forty million, seven hundred forty-five thousand, two hundred twenty-five".