1255122643571 has 2 divisors, whose sum is σ = 1255122643572. Its totient is φ = 1255122643570.

The previous prime is 1255122643543. The next prime is 1255122643573. The reversal of 1255122643571 is 1753462215521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1255122643571 - 2¹⁸ = 1255122381427 is a prime.

Together with 1255122643573, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1255122643573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627561321785 + 627561321786.

It is an arithmetic number, because the mean of its divisors is an integer number (627561321786).

Almost surely, 2^{1255122643571} is an apocalyptic number.

1255122643571 is a deficient number, since it is larger than the sum of its proper divisors (1).

1255122643571 is an equidigital number, since it uses as much as digits as its factorization.

1255122643571 is an evil number, because the sum of its binary digits is even.

The product of its digits is 504000, while the sum is 44.

The spelling of 1255122643571 in words is "one trillion, two hundred fifty-five billion, one hundred twenty-two million, six hundred forty-three thousand, five hundred seventy-one".