12581376250 has 20 divisors (see below), whose sum is σ = 23582533986. Its totient is φ = 5032550000.

The previous prime is 12581376239. The next prime is 12581376397. The reversal of 12581376250 is 5267318521.

It can be written as a sum of positive squares in 5 ways, for example, as 1020610809 + 11560765441 = 31947^2 + 107521^2 .

It is an unprimeable number.

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 9 ways as a sum of consecutive naturals, for example, 5031301 + ... + 5033800.

Almost surely, 2^12581376250 is an apocalyptic number.

12581376250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12581376250 is a deficient number, since it is larger than the sum of its proper divisors (11001157736).

12581376250 is an equidigital number, since it uses as much as digits as its factorization.

12581376250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10065123 (or 10065108 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 40.

The spelling of 12581376250 in words is "twelve billion, five hundred eighty-one million, three hundred seventy-six thousand, two hundred fifty".