1282505717 has 2 divisors, whose sum is σ = 1282505718. Its totient is φ = 1282505716.

The previous prime is 1282505641. The next prime is 1282505723. The reversal of 1282505717 is 7175052821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1092038116 + 190467601 = 33046^2 + 13801^2 .

It is a cyclic number.

It is not a de Polignac number, because 1282505717 - 2¹² = 1282501621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1282505767) 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, 641252858 + 641252859.

It is an arithmetic number, because the mean of its divisors is an integer number (641252859).

Almost surely, 2^1282505717 is an apocalyptic number.

It is an amenable number.

1282505717 is a deficient number, since it is larger than the sum of its proper divisors (1).

1282505717 is an equidigital number, since it uses as much as digits as its factorization.

1282505717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 39200, while the sum is 38.

The square root of 1282505717 is about 35812.0889784441. The cubic root of 1282505717 is about 1086.4750809047.

The spelling of 1282505717 in words is "one billion, two hundred eighty-two million, five hundred five thousand, seven hundred seventeen".