255133521457 has 2 divisors, whose sum is σ = 255133521458. Its totient is φ = 255133521456.

The previous prime is 255133521443. The next prime is 255133521563. The reversal of 255133521457 is 754125331552.

It is a happy number.

255133521457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 250844712336 + 4288809121 = 500844^2 + 65489^2 .

It is a cyclic number.

It is not a de Polignac number, because 255133521457 - 2¹⁵ = 255133488689 is a prime.

It is a super-2 number, since 2×255133521457² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (255133521427) 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, 127566760728 + 127566760729.

It is an arithmetic number, because the mean of its divisors is an integer number (127566760729).

Almost surely, 2^255133521457 is an apocalyptic number.

It is an amenable number.

255133521457 is a deficient number, since it is larger than the sum of its proper divisors (1).

255133521457 is an equidigital number, since it uses as much as digits as its factorization.

255133521457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 630000, while the sum is 43.

The spelling of 255133521457 in words is "two hundred fifty-five billion, one hundred thirty-three million, five hundred twenty-one thousand, four hundred fifty-seven".