255423544457 has 2 divisors, whose sum is σ = 255423544458. Its totient is φ = 255423544456.

The previous prime is 255423544423. The next prime is 255423544489. The reversal of 255423544457 is 754445324552.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 253475999296 + 1947545161 = 503464^2 + 44131^2 .

It is a cyclic number.

It is not a de Polignac number, because 255423544457 - 2⁶ = 255423544393 is a prime.

It is not a weakly prime, because it can be changed into another prime (255423546457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127711772228 + 127711772229.

It is an arithmetic number, because the mean of its divisors is an integer number (127711772229).

Almost surely, 2^255423544457 is an apocalyptic number.

It is an amenable number.

255423544457 is a deficient number, since it is larger than the sum of its proper divisors (1).

255423544457 is an equidigital number, since it uses as much as digits as its factorization.

255423544457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13440000, while the sum is 50.

The spelling of 255423544457 in words is "two hundred fifty-five billion, four hundred twenty-three million, five hundred forty-four thousand, four hundred fifty-seven".