1275002257 has 2 divisors, whose sum is σ = 1275002258. Its totient is φ = 1275002256.

The previous prime is 1275002243. The next prime is 1275002269. The reversal of 1275002257 is 7522005721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1271350336 + 3651921 = 35656^2 + 1911^2 .

It is a cyclic number.

It is not a de Polignac number, because 1275002257 - 2¹⁵ = 1274969489 is a prime.

It is not a weakly prime, because it can be changed into another prime (1275002207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 637501128 + 637501129.

It is an arithmetic number, because the mean of its divisors is an integer number (637501129).

Almost surely, 2^1275002257 is an apocalyptic number.

It is an amenable number.

1275002257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1275002257 is an equidigital number, since it uses as much as digits as its factorization.

1275002257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9800, while the sum is 31.

The square root of 1275002257 is about 35707.1737470218. The cubic root of 1275002257 is about 1084.3520824629.

Adding to 1275002257 its reverse (7522005721), we get a palindrome (8797007978).

The spelling of 1275002257 in words is "one billion, two hundred seventy-five million, two thousand, two hundred fifty-seven".