12501563251 has 2 divisors, whose sum is σ = 12501563252. Its totient is φ = 12501563250.

The previous prime is 12501563237. The next prime is 12501563279. The reversal of 12501563251 is 15236510521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12501563251 - 2¹¹ = 12501561203 is a prime.

It is not a weakly prime, because it can be changed into another prime (12501563231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6250781625 + 6250781626.

It is an arithmetic number, because the mean of its divisors is an integer number (6250781626).

Almost surely, 2^12501563251 is an apocalyptic number.

12501563251 is a deficient number, since it is larger than the sum of its proper divisors (1).

12501563251 is an equidigital number, since it uses as much as digits as its factorization.

12501563251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9000, while the sum is 31.

The spelling of 12501563251 in words is "twelve billion, five hundred one million, five hundred sixty-three thousand, two hundred fifty-one".