8255136247 has 2 divisors, whose sum is σ = 8255136248. Its totient is φ = 8255136246.

The previous prime is 8255136221. The next prime is 8255136257. The reversal of 8255136247 is 7426315528.

8255136247 is digitally balanced in base 3, 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 a de Polignac number, because none of the positive numbers 2^k-8255136247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8255136257) 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, 4127568123 + 4127568124.

It is an arithmetic number, because the mean of its divisors is an integer number (4127568124).

Almost surely, 2^8255136247 is an apocalyptic number.

8255136247 is a deficient number, since it is larger than the sum of its proper divisors (1).

8255136247 is an equidigital number, since it uses as much as digits as its factorization.

8255136247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 403200, while the sum is 43.

The square root of 8255136247 is about 90857.7803327816. The cubic root of 8255136247 is about 2021.0392527528.

The spelling of 8255136247 in words is "eight billion, two hundred fifty-five million, one hundred thirty-six thousand, two hundred forty-seven".