1255331863 has 2 divisors, whose sum is σ = 1255331864. Its totient is φ = 1255331862.

The previous prime is 1255331851. The next prime is 1255331879. The reversal of 1255331863 is 3681335521.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1255331863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1255331263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627665931 + 627665932.

It is an arithmetic number, because the mean of its divisors is an integer number (627665932).

Almost surely, 2^1255331863 is an apocalyptic number.

1255331863 is a deficient number, since it is larger than the sum of its proper divisors (1).

1255331863 is an equidigital number, since it uses as much as digits as its factorization.

1255331863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 37.

The square root of 1255331863 is about 35430.6627513514. The cubic root of 1255331863 is about 1078.7467925396.

The spelling of 1255331863 in words is "one billion, two hundred fifty-five million, three hundred thirty-one thousand, eight hundred sixty-three".