1168398855625 has 15 divisors (see below), whose sum is σ = 1460064978867. Its totient is φ = 934697466000.

The previous prime is 1168398855623. The next prime is 1168398855653. The reversal of 1168398855625 is 5265588938611.

The square root of 1168398855625 is 1080925.

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

It can be written as a sum of positive squares in 7 ways, for example, as 1153396525369 + 15002330256 = 1073963^2 + 122484^2 .

It is not a de Polignac number, because 1168398855625 - 2¹ = 1168398855623 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1168398855623) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 27001507 + ... + 27044743.

Almost surely, 2^{1168398855625} is an apocalyptic number.

1168398855625 is the 1080925-th square number.

1168398855625 is the 540463-rd centered octagonal number.

It is an amenable number.

1168398855625 is a deficient number, since it is larger than the sum of its proper divisors (291666123242).

1168398855625 is an frugal number, since it uses more digits than its factorization.

1168398855625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86494 (or 43242 counting only the distinct ones).

The product of its digits is 124416000, while the sum is 67.

The spelling of 1168398855625 in words is "one trillion, one hundred sixty-eight billion, three hundred ninety-eight million, eight hundred fifty-five thousand, six hundred twenty-five".