7856745125 has 16 divisors (see below), whose sum is σ = 9824119344. Its totient is φ = 6273280000.

The previous prime is 7856745079. The next prime is 7856745133. The reversal of 7856745125 is 5215476587.

7856745125 is digitally balanced in base 3, 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 8 ways, for example, as 2000057284 + 5856687841 = 44722^2 + 76529^2 .

It is not a de Polignac number, because 7856745125 - 2¹⁰ = 7856744101 is a prime.

It is a super-2 number, since 2×7856745125² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4805 + ... + 125445.

It is an arithmetic number, because the mean of its divisors is an integer number (614007459).

Almost surely, 2^7856745125 is an apocalyptic number.

It is an amenable number.

7856745125 is a deficient number, since it is larger than the sum of its proper divisors (1967374219).

7856745125 is a wasteful number, since it uses less digits than its factorization.

7856745125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121177 (or 121167 counting only the distinct ones).

The product of its digits is 2352000, while the sum is 50.

The square root of 7856745125 is about 88638.2825025395. The cubic root of 7856745125 is about 1987.9901194911.

The spelling of 7856745125 in words is "seven billion, eight hundred fifty-six million, seven hundred forty-five thousand, one hundred twenty-five".