9838039999225 has 27 divisors (see below), whose sum is σ = 12246667157959. Its totient is φ = 7839906948800.

The previous prime is 9838039999181. The next prime is 9838039999237. The reversal of 9838039999225 is 5229999308389.

The square root of 9838039999225 is 3136565.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 360976260969 + 9477063738256 = 600813^2 + 3078484^2 .

It is a de Polignac number, because none of the positive numbers 2^k-9838039999225 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 4595066655 + ... + 4595068795.

Almost surely, 2^{9838039999225} is an apocalyptic number.

9838039999225 is the 3136565-th square number.

9838039999225 is the 1568283-rd centered octagonal number.

It is an amenable number.

9838039999225 is a deficient number, since it is larger than the sum of its proper divisors (2408627158734).

9838039999225 is an frugal number, since it uses more digits than its factorization.

9838039999225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4878 (or 2439 counting only the distinct ones).

The product of its (nonzero) digits is 680244480, while the sum is 76.

It can be divided in two parts, 9838039 and 999225, that added together give a square (10837264 = 3292²).

The spelling of 9838039999225 in words is "nine trillion, eight hundred thirty-eight billion, thirty-nine million, nine hundred ninety-nine thousand, two hundred twenty-five".