8125712388 has 18 divisors (see below), whose sum is σ = 20539995294. Its totient is φ = 2708570784.

The previous prime is 8125712381. The next prime is 8125712393. The reversal of 8125712388 is 8832175218.

8125712388 is a `hidden beast` number, since 8 + 1 + 257 + 12 + 388 = 666.

It can be written as a sum of positive squares in only one way, i.e., 7332839424 + 792872964 = 85632^2 + 28158^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (8125712381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 112857081 + ... + 112857152.

Almost surely, 2^8125712388 is an apocalyptic number.

It is an amenable number.

8125712388 is an abundant number, since it is smaller than the sum of its proper divisors (12414282906).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8125712388 is a wasteful number, since it uses less digits than its factorization.

8125712388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225714243 (or 225714238 counting only the distinct ones).

The product of its digits is 215040, while the sum is 45.

The square root of 8125712388 is about 90142.7334176194. The cubic root of 8125712388 is about 2010.4216327935.

The spelling of 8125712388 in words is "eight billion, one hundred twenty-five million, seven hundred twelve thousand, three hundred eighty-eight".