9686398525 has 12 divisors (see below), whose sum is σ = 12060980404. Its totient is φ = 7716960000.

The previous prime is 9686398517. The next prime is 9686398529. The reversal of 9686398525 is 5258936869.

9686398525 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 6 ways, for example, as 570540996 + 9115857529 = 23886^2 + 95477^2 .

It is not a de Polignac number, because 9686398525 - 2³ = 9686398517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9686398529) 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 11 ways as a sum of consecutive naturals, for example, 797826 + ... + 809875.

Almost surely, 2^9686398525 is an apocalyptic number.

It is an amenable number.

9686398525 is a deficient number, since it is larger than the sum of its proper divisors (2374581879).

9686398525 is a wasteful number, since it uses less digits than its factorization.

9686398525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1607952 (or 1607947 counting only the distinct ones).

The product of its digits is 27993600, while the sum is 61.

The square root of 9686398525 is about 98419.5027674901. The cubic root of 9686398525 is about 2131.6739487948.

The spelling of 9686398525 in words is "nine billion, six hundred eighty-six million, three hundred ninety-eight thousand, five hundred twenty-five".