1255333243 has 2 divisors, whose sum is σ = 1255333244. Its totient is φ = 1255333242.

The previous prime is 1255333241. The next prime is 1255333267. The reversal of 1255333243 is 3423335521.

It is a weak prime.

It is an emirp because it is prime and its reverse (3423335521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1255333243 - 2¹ = 1255333241 is a prime.

Together with 1255333241, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1255333241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627666621 + 627666622.

It is an arithmetic number, because the mean of its divisors is an integer number (627666622).

Almost surely, 2^1255333243 is an apocalyptic number.

1255333243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1255333243 is an equidigital number, since it uses as much as digits as its factorization.

1255333243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32400, while the sum is 31.

The square root of 1255333243 is about 35430.6822260029. The cubic root of 1255333243 is about 1078.7471878321.

Adding to 1255333243 its reverse (3423335521), we get a palindrome (4678668764).

It can be divided in two parts, 12553 and 33243, that added together give a square (45796 = 214²).

The spelling of 1255333243 in words is "one billion, two hundred fifty-five million, three hundred thirty-three thousand, two hundred forty-three".