12526123289 has 2 divisors, whose sum is σ = 12526123290. Its totient is φ = 12526123288.

The previous prime is 12526123279. The next prime is 12526123303. The reversal of 12526123289 is 98232162521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12047257600 + 478865689 = 109760^2 + 21883^2 .

It is a cyclic number.

It is not a de Polignac number, because 12526123289 - 2⁴ = 12526123273 is a prime.

It is not a weakly prime, because it can be changed into another prime (12526123229) 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, 6263061644 + 6263061645.

It is an arithmetic number, because the mean of its divisors is an integer number (6263061645).

Almost surely, 2^12526123289 is an apocalyptic number.

It is an amenable number.

12526123289 is a deficient number, since it is larger than the sum of its proper divisors (1).

12526123289 is an equidigital number, since it uses as much as digits as its factorization.

12526123289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 41.

The spelling of 12526123289 in words is "twelve billion, five hundred twenty-six million, one hundred twenty-three thousand, two hundred eighty-nine".