1255320263 has 2 divisors, whose sum is σ = 1255320264. Its totient is φ = 1255320262.

The previous prime is 1255320233. The next prime is 1255320299. The reversal of 1255320263 is 3620235521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1255320263 - 2⁸ = 1255320007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1255320233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627660131 + 627660132.

It is an arithmetic number, because the mean of its divisors is an integer number (627660132).

Almost surely, 2^1255320263 is an apocalyptic number.

1255320263 is a deficient number, since it is larger than the sum of its proper divisors (1).

1255320263 is an equidigital number, since it uses as much as digits as its factorization.

1255320263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 1255320263 is about 35430.4990509589. The cubic root of 1255320263 is about 1078.7434697791.

Adding to 1255320263 its reverse (3620235521), we get a palindrome (4875555784).

The spelling of 1255320263 in words is "one billion, two hundred fifty-five million, three hundred twenty thousand, two hundred sixty-three".