1255351729 has 2 divisors, whose sum is σ = 1255351730. Its totient is φ = 1255351728.

The previous prime is 1255351703. The next prime is 1255351733. The reversal of 1255351729 is 9271535521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1226750625 + 28601104 = 35025^2 + 5348^2 .

It is a cyclic number.

It is not a de Polignac number, because 1255351729 - 2⁵ = 1255351697 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1255351691 and 1255351700.

It is not a weakly prime, because it can be changed into another prime (1255351829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627675864 + 627675865.

It is an arithmetic number, because the mean of its divisors is an integer number (627675865).

Almost surely, 2^1255351729 is an apocalyptic number.

It is an amenable number.

1255351729 is a deficient number, since it is larger than the sum of its proper divisors (1).

1255351729 is an equidigital number, since it uses as much as digits as its factorization.

1255351729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 94500, while the sum is 40.

The square root of 1255351729 is about 35430.9431006289. The cubic root of 1255351729 is about 1078.7524830058.

The spelling of 1255351729 in words is "one billion, two hundred fifty-five million, three hundred fifty-one thousand, seven hundred twenty-nine".