1266255293 has 2 divisors, whose sum is σ = 1266255294. Its totient is φ = 1266255292.

The previous prime is 1266255257. The next prime is 1266255343. The reversal of 1266255293 is 3925526621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1214731609 + 51523684 = 34853^2 + 7178^2 .

It is a cyclic number.

It is not a de Polignac number, because 1266255293 - 2⁶ = 1266255229 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1266255293.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1266455293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 633127646 + 633127647.

It is an arithmetic number, because the mean of its divisors is an integer number (633127647).

Almost surely, 2^1266255293 is an apocalyptic number.

It is an amenable number.

1266255293 is a deficient number, since it is larger than the sum of its proper divisors (1).

1266255293 is an equidigital number, since it uses as much as digits as its factorization.

1266255293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 194400, while the sum is 41.

The square root of 1266255293 is about 35584.4810697023. The cubic root of 1266255293 is about 1081.8667113497.

The spelling of 1266255293 in words is "one billion, two hundred sixty-six million, two hundred fifty-five thousand, two hundred ninety-three".