6415425817 has 2 divisors, whose sum is σ = 6415425818. Its totient is φ = 6415425816.

The previous prime is 6415425773. The next prime is 6415425823. The reversal of 6415425817 is 7185245146.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6031696896 + 383728921 = 77664^2 + 19589^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6415425817 is a prime.

It is not a weakly prime, because it can be changed into another prime (6415425017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3207712908 + 3207712909.

It is an arithmetic number, because the mean of its divisors is an integer number (3207712909).

Almost surely, 2^6415425817 is an apocalyptic number.

It is an amenable number.

6415425817 is a deficient number, since it is larger than the sum of its proper divisors (1).

6415425817 is an equidigital number, since it uses as much as digits as its factorization.

6415425817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 268800, while the sum is 43.

The square root of 6415425817 is about 80096.3533314720. The cubic root of 6415425817 is about 1858.1260095109.

The spelling of 6415425817 in words is "six billion, four hundred fifteen million, four hundred twenty-five thousand, eight hundred seventeen".