12545622289 has 2 divisors, whose sum is σ = 12545622290. Its totient is φ = 12545622288.

The previous prime is 12545622281. The next prime is 12545622317. The reversal of 12545622289 is 98222654521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12424446225 + 121176064 = 111465^2 + 11008^2 .

It is a cyclic number.

It is not a de Polignac number, because 12545622289 - 2³ = 12545622281 is a prime.

It is not a weakly prime, because it can be changed into another prime (12545622281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6272811144 + 6272811145.

It is an arithmetic number, because the mean of its divisors is an integer number (6272811145).

Almost surely, 2^12545622289 is an apocalyptic number.

It is an amenable number.

12545622289 is a deficient number, since it is larger than the sum of its proper divisors (1).

12545622289 is an equidigital number, since it uses as much as digits as its factorization.

12545622289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 691200, while the sum is 46.

The spelling of 12545622289 in words is "twelve billion, five hundred forty-five million, six hundred twenty-two thousand, two hundred eighty-nine".