26250264012569 has 2 divisors, whose sum is σ = 26250264012570. Its totient is φ = 26250264012568.

The previous prime is 26250264012527. The next prime is 26250264012673. The reversal of 26250264012569 is 96521046205262.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15725689906969 + 10524574105600 = 3965563^2 + 3244160^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26250264012569 is a prime.

It is a super-2 number, since 2×26250264012569² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (26250264072569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13125132006284 + 13125132006285.

It is an arithmetic number, because the mean of its divisors is an integer number (13125132006285).

Almost surely, 2^{26250264012569} is an apocalyptic number.

It is an amenable number.

26250264012569 is a deficient number, since it is larger than the sum of its proper divisors (1).

26250264012569 is an equidigital number, since it uses as much as digits as its factorization.

26250264012569 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3110400, while the sum is 50.

The spelling of 26250264012569 in words is "twenty-six trillion, two hundred fifty billion, two hundred sixty-four million, twelve thousand, five hundred sixty-nine".