1255020313 has 2 divisors, whose sum is σ = 1255020314. Its totient is φ = 1255020312.

The previous prime is 1255020287. The next prime is 1255020401. The reversal of 1255020313 is 3130205521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 724040464 + 530979849 = 26908^2 + 23043^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1255020313 is a prime.

It is not a weakly prime, because it can be changed into another prime (1255020113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627510156 + 627510157.

It is an arithmetic number, because the mean of its divisors is an integer number (627510157).

Almost surely, 2^1255020313 is an apocalyptic number.

It is an amenable number.

1255020313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1255020313 is an equidigital number, since it uses as much as digits as its factorization.

1255020313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 1255020313 is about 35426.2658630570. The cubic root of 1255020313 is about 1078.6575435316.

Adding to 1255020313 its reverse (3130205521), we get a palindrome (4385225834).

The spelling of 1255020313 in words is "one billion, two hundred fifty-five million, twenty thousand, three hundred thirteen".