511225333245257 has 2 divisors, whose sum is σ = 511225333245258. Its totient is φ = 511225333245256.

The previous prime is 511225333245199. The next prime is 511225333245311. The reversal of 511225333245257 is 752542333522115.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 451689541434121 + 59535791811136 = 21252989^2 + 7715944^2 .

It is a cyclic number.

It is not a de Polignac number, because 511225333245257 - 2²⁰ = 511225332196681 is a prime.

It is a super-2 number, since 2×511225333245257² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (511225333241257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255612666622628 + 255612666622629.

It is an arithmetic number, because the mean of its divisors is an integer number (255612666622629).

Almost surely, 2^{511225333245257} is an apocalyptic number.

It is an amenable number.

511225333245257 is a deficient number, since it is larger than the sum of its proper divisors (1).

511225333245257 is an equidigital number, since it uses as much as digits as its factorization.

511225333245257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7560000, while the sum is 50.

The spelling of 511225333245257 in words is "five hundred eleven trillion, two hundred twenty-five billion, three hundred thirty-three million, two hundred forty-five thousand, two hundred fifty-seven".