12500071305 has 16 divisors (see below), whose sum is σ = 20540658624. Its totient is φ = 6486523200.

The previous prime is 12500071273. The next prime is 12500071313. The reversal of 12500071305 is 50317000521.

It is not a de Polignac number, because 12500071305 - 2⁵ = 12500071273 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 11260771 + ... + 11261880.

It is an arithmetic number, because the mean of its divisors is an integer number (1283791164).

Almost surely, 2^12500071305 is an apocalyptic number.

12500071305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12500071305 is a deficient number, since it is larger than the sum of its proper divisors (8040587319).

12500071305 is a wasteful number, since it uses less digits than its factorization.

12500071305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22522696.

The product of its (nonzero) digits is 1050, while the sum is 24.

Adding to 12500071305 its reverse (50317000521), we get a palindrome (62817071826).

The spelling of 12500071305 in words is "twelve billion, five hundred million, seventy-one thousand, three hundred five".