12425644919 has 2 divisors, whose sum is σ = 12425644920. Its totient is φ = 12425644918.

The previous prime is 12425644859. The next prime is 12425644921. The reversal of 12425644919 is 91944652421.

12425644919 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12425644919 - 2³² = 8130677623 is a prime.

It is a super-2 number, since 2×12425644919² (a number of 21 digits) contains 22 as substring.

Together with 12425644921, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12425644939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6212822459 + 6212822460.

It is an arithmetic number, because the mean of its divisors is an integer number (6212822460).

Almost surely, 2^12425644919 is an apocalyptic number.

12425644919 is a deficient number, since it is larger than the sum of its proper divisors (1).

12425644919 is an equidigital number, since it uses as much as digits as its factorization.

12425644919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 622080, while the sum is 47.

The spelling of 12425644919 in words is "twelve billion, four hundred twenty-five million, six hundred forty-four thousand, nine hundred nineteen".