8128263125 has 40 divisors (see below), whose sum is σ = 11005277184. Its totient is φ = 5977440000.

The previous prime is 8128263071. The next prime is 8128263127. The reversal of 8128263125 is 5213628218.

It is not a de Polignac number, because 8128263125 - 2⁸ = 8128262869 is a prime.

It is a super-2 number, since 2×8128263125² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8128263127) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 447980 + ... + 465770.

Almost surely, 2^8128263125 is an apocalyptic number.

8128263125 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

8128263125 is a deficient number, since it is larger than the sum of its proper divisors (2877014059).

8128263125 is a wasteful number, since it uses less digits than its factorization.

8128263125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17871 (or 17856 counting only the distinct ones).

The product of its digits is 46080, while the sum is 38.

The square root of 8128263125 is about 90156.8806303767. The cubic root of 8128263125 is about 2010.6319741605.

The spelling of 8128263125 in words is "eight billion, one hundred twenty-eight million, two hundred sixty-three thousand, one hundred twenty-five".