1275286273 has 2 divisors, whose sum is σ = 1275286274. Its totient is φ = 1275286272.

The previous prime is 1275286237. The next prime is 1275286333. The reversal of 1275286273 is 3726825721.

Together with previous prime (1275286237) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 991431169 + 283855104 = 31487^2 + 16848^2 .

It is a cyclic number.

It is not a de Polignac number, because 1275286273 - 2²¹ = 1273189121 is a prime.

It is not a weakly prime, because it can be changed into another prime (1275286373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 637643136 + 637643137.

It is an arithmetic number, because the mean of its divisors is an integer number (637643137).

Almost surely, 2^1275286273 is an apocalyptic number.

It is an amenable number.

1275286273 is a deficient number, since it is larger than the sum of its proper divisors (1).

1275286273 is an equidigital number, since it uses as much as digits as its factorization.

1275286273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 282240, while the sum is 43.

The square root of 1275286273 is about 35711.1505415325. The cubic root of 1275286273 is about 1084.4325922488.

The spelling of 1275286273 in words is "one billion, two hundred seventy-five million, two hundred eighty-six thousand, two hundred seventy-three".