255530025577 has 2 divisors, whose sum is σ = 255530025578. Its totient is φ = 255530025576.

The previous prime is 255530025533. The next prime is 255530025601. The reversal of 255530025577 is 775520035552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 248645838736 + 6884186841 = 498644^2 + 82971^2 .

It is a cyclic number.

It is not a de Polignac number, because 255530025577 - 2⁷ = 255530025449 is a prime.

It is not a weakly prime, because it can be changed into another prime (255530025077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127765012788 + 127765012789.

It is an arithmetic number, because the mean of its divisors is an integer number (127765012789).

Almost surely, 2^255530025577 is an apocalyptic number.

It is an amenable number.

255530025577 is a deficient number, since it is larger than the sum of its proper divisors (1).

255530025577 is an equidigital number, since it uses as much as digits as its factorization.

255530025577 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1837500, while the sum is 46.

The spelling of 255530025577 in words is "two hundred fifty-five billion, five hundred thirty million, twenty-five thousand, five hundred seventy-seven".