1255111267 has 2 divisors, whose sum is σ = 1255111268. Its totient is φ = 1255111266.

The previous prime is 1255111243. The next prime is 1255111283. The reversal of 1255111267 is 7621115521.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1255111267 is a prime.

It is not a weakly prime, because it can be changed into another prime (1255111217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627555633 + 627555634.

It is an arithmetic number, because the mean of its divisors is an integer number (627555634).

Almost surely, 2^1255111267 is an apocalyptic number.

1255111267 is a deficient number, since it is larger than the sum of its proper divisors (1).

1255111267 is an equidigital number, since it uses as much as digits as its factorization.

1255111267 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4200, while the sum is 31.

The square root of 1255111267 is about 35427.5495483388. The cubic root of 1255111267 is about 1078.6836004401.

Adding to 1255111267 its reverse (7621115521), we get a palindrome (8876226788).

The spelling of 1255111267 in words is "one billion, two hundred fifty-five million, one hundred eleven thousand, two hundred sixty-seven".