1275628229 has 2 divisors, whose sum is σ = 1275628230. Its totient is φ = 1275628228.

The previous prime is 1275628181. The next prime is 1275628261. The reversal of 1275628229 is 9228265721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 970322500 + 305305729 = 31150^2 + 17473^2 .

It is a cyclic number.

It is not a de Polignac number, because 1275628229 - 2⁸ = 1275627973 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1275628229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1275628429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 637814114 + 637814115.

It is an arithmetic number, because the mean of its divisors is an integer number (637814115).

Almost surely, 2^1275628229 is an apocalyptic number.

It is an amenable number.

1275628229 is a deficient number, since it is larger than the sum of its proper divisors (1).

1275628229 is an equidigital number, since it uses as much as digits as its factorization.

1275628229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 44.

The square root of 1275628229 is about 35715.9380249210. The cubic root of 1275628229 is about 1084.5295103813.

The spelling of 1275628229 in words is "one billion, two hundred seventy-five million, six hundred twenty-eight thousand, two hundred twenty-nine".