9995639125 has 16 divisors (see below), whose sum is σ = 12477935808. Its totient is φ = 7994346000.

The previous prime is 9995639123. The next prime is 9995639179. The reversal of 9995639125 is 5219365999.

9995639125 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 9995639125 - 2¹ = 9995639123 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9995639125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9995639123) 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, 581910 + ... + 598840.

It is an arithmetic number, because the mean of its divisors is an integer number (779870988).

Almost surely, 2^9995639125 is an apocalyptic number.

It is an amenable number.

9995639125 is a deficient number, since it is larger than the sum of its proper divisors (2482296683).

9995639125 is a wasteful number, since it uses less digits than its factorization.

9995639125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21669 (or 21659 counting only the distinct ones).

The product of its digits is 5904900, while the sum is 58.

The square root of 9995639125 is about 99978.1932473277. The cubic root of 9995639125 is about 2154.1214704845.

The spelling of 9995639125 in words is "nine billion, nine hundred ninety-five million, six hundred thirty-nine thousand, one hundred twenty-five".