9649656725 has 12 divisors (see below), whose sum is σ = 11968400640. Its totient is φ = 7717902000.

The previous prime is 9649656691. The next prime is 9649656743. The reversal of 9649656725 is 5276569469.

9649656725 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9649656725 - 2¹² = 9649652629 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67916 + ... + 154634.

It is an arithmetic number, because the mean of its divisors is an integer number (997366720).

Almost surely, 2^9649656725 is an apocalyptic number.

It is an amenable number.

9649656725 is a deficient number, since it is larger than the sum of its proper divisors (2318743915).

9649656725 is a wasteful number, since it uses less digits than its factorization.

9649656725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91180 (or 91175 counting only the distinct ones).

The product of its digits is 24494400, while the sum is 59.

The square root of 9649656725 is about 98232.6662826577. Note that the first 3 decimals coincide. The cubic root of 9649656725 is about 2128.9752927047.

The spelling of 9649656725 in words is "nine billion, six hundred forty-nine million, six hundred fifty-six thousand, seven hundred twenty-five".