13256100257 has 2 divisors, whose sum is σ = 13256100258. Its totient is φ = 13256100256.

The previous prime is 13256100241. The next prime is 13256100287. The reversal of 13256100257 is 75200165231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10940950801 + 2315149456 = 104599^2 + 48116^2 .

It is an emirp because it is prime and its reverse (75200165231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13256100257 - 2⁴ = 13256100241 is a prime.

It is not a weakly prime, because it can be changed into another prime (13256100287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6628050128 + 6628050129.

It is an arithmetic number, because the mean of its divisors is an integer number (6628050129).

Almost surely, 2^13256100257 is an apocalyptic number.

It is an amenable number.

13256100257 is a deficient number, since it is larger than the sum of its proper divisors (1).

13256100257 is an equidigital number, since it uses as much as digits as its factorization.

13256100257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12600, while the sum is 32.

Adding to 13256100257 its reverse (75200165231), we get a palindrome (88456265488).

The spelling of 13256100257 in words is "thirteen billion, two hundred fifty-six million, one hundred thousand, two hundred fifty-seven".