255566205373 has 2 divisors, whose sum is σ = 255566205374. Its totient is φ = 255566205372.

The previous prime is 255566205299. The next prime is 255566205397. The reversal of 255566205373 is 373502665552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 243746601849 + 11819603524 = 493707^2 + 108718^2 .

It is a cyclic number.

It is not a de Polignac number, because 255566205373 - 2²⁵ = 255532650941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255566205173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127783102686 + 127783102687.

It is an arithmetic number, because the mean of its divisors is an integer number (127783102687).

Almost surely, 2^255566205373 is an apocalyptic number.

It is an amenable number.

255566205373 is a deficient number, since it is larger than the sum of its proper divisors (1).

255566205373 is an equidigital number, since it uses as much as digits as its factorization.

255566205373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5670000, while the sum is 49.

The spelling of 255566205373 in words is "two hundred fifty-five billion, five hundred sixty-six million, two hundred five thousand, three hundred seventy-three".