8128281250 has 32 divisors (see below), whose sum is σ = 15240781296. Its totient is φ = 3251250000.

The previous prime is 8128281221. The next prime is 8128281253. The reversal of 8128281250 is 521828218.

It can be written as a sum of positive squares in 8 ways, for example, as 7504930161 + 623351089 = 86631^2 + 24967^2 .

It is not an unprimeable number, because it can be changed into a prime (8128281253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130240 + ... + 182260.

Almost surely, 2^8128281250 is an apocalyptic number.

8128281250 is a deficient number, since it is larger than the sum of its proper divisors (7112500046).

8128281250 is an frugal number, since it uses more digits than its factorization.

8128281250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52058 (or 52028 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 37.

The square root of 8128281250 is about 90156.9811495483. The cubic root of 8128281250 is about 2010.6334686445.

The spelling of 8128281250 in words is "eight billion, one hundred twenty-eight million, two hundred eighty-one thousand, two hundred fifty".