12501563237 has 2 divisors, whose sum is σ = 12501563238. Its totient is φ = 12501563236.

The previous prime is 12501563231. The next prime is 12501563251. The reversal of 12501563237 is 73236510521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10689698881 + 1811864356 = 103391^2 + 42566^2 .

It is a cyclic number.

It is not a de Polignac number, because 12501563237 - 2²⁰ = 12500514661 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12501563197 and 12501563206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12501563231) 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 as a sum of consecutive naturals, namely, 6250781618 + 6250781619.

It is an arithmetic number, because the mean of its divisors is an integer number (6250781619).

Almost surely, 2^12501563237 is an apocalyptic number.

It is an amenable number.

12501563237 is a deficient number, since it is larger than the sum of its proper divisors (1).

12501563237 is an equidigital number, since it uses as much as digits as its factorization.

12501563237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37800, while the sum is 35.

The spelling of 12501563237 in words is "twelve billion, five hundred one million, five hundred sixty-three thousand, two hundred thirty-seven".