12501263729 has 2 divisors, whose sum is σ = 12501263730. Its totient is φ = 12501263728.

The previous prime is 12501263683. The next prime is 12501263771. The reversal of 12501263729 is 92736210521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8541456400 + 3959807329 = 92420^2 + 62927^2 .

It is a cyclic number.

It is not a de Polignac number, because 12501263729 - 2⁸ = 12501263473 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12501263692 and 12501263701.

It is not a weakly prime, because it can be changed into another prime (12501262729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6250631864 + 6250631865.

It is an arithmetic number, because the mean of its divisors is an integer number (6250631865).

Almost surely, 2^12501263729 is an apocalyptic number.

It is an amenable number.

12501263729 is a deficient number, since it is larger than the sum of its proper divisors (1).

12501263729 is an equidigital number, since it uses as much as digits as its factorization.

12501263729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 38.

The spelling of 12501263729 in words is "twelve billion, five hundred one million, two hundred sixty-three thousand, seven hundred twenty-nine".