255576574681 has 2 divisors, whose sum is σ = 255576574682. Its totient is φ = 255576574680.

The previous prime is 255576574651. The next prime is 255576574769. The reversal of 255576574681 is 186475675552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 194406919056 + 61169655625 = 440916^2 + 247325^2 .

It is a cyclic number.

It is not a de Polignac number, because 255576574681 - 2⁷ = 255576574553 is a prime.

It is a super-2 number, since 2×255576574681² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (255576574651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127788287340 + 127788287341.

It is an arithmetic number, because the mean of its divisors is an integer number (127788287341).

Almost surely, 2^255576574681 is an apocalyptic number.

It is an amenable number.

255576574681 is a deficient number, since it is larger than the sum of its proper divisors (1).

255576574681 is an equidigital number, since it uses as much as digits as its factorization.

255576574681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 70560000, while the sum is 61.

The spelling of 255576574681 in words is "two hundred fifty-five billion, five hundred seventy-six million, five hundred seventy-four thousand, six hundred eighty-one".