9809671625 has 16 divisors (see below), whose sum is σ = 13184200848. Its totient is φ = 7244064000.

The previous prime is 9809671621. The next prime is 9809671637. The reversal of 9809671625 is 5261769089.

9809671625 is digitally balanced in base 2, 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 8 ways, for example, as 3960940096 + 5848731529 = 62936^2 + 76477^2 .

It is not a de Polignac number, because 9809671625 - 2² = 9809671621 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9809671621) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3016736 + ... + 3019985.

It is an arithmetic number, because the mean of its divisors is an integer number (824012553).

Almost surely, 2^9809671625 is an apocalyptic number.

It is an amenable number.

9809671625 is a deficient number, since it is larger than the sum of its proper divisors (3374529223).

9809671625 is a wasteful number, since it uses less digits than its factorization.

9809671625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6036749 (or 6036739 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 53.

The square root of 9809671625 is about 99043.7864027825. The cubic root of 9809671625 is about 2140.6787104644.

The spelling of 9809671625 in words is "nine billion, eight hundred nine million, six hundred seventy-one thousand, six hundred twenty-five".