1275068261 has 2 divisors, whose sum is σ = 1275068262. Its totient is φ = 1275068260.

The previous prime is 1275068257. The next prime is 1275068287. The reversal of 1275068261 is 1628605721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1261599361 + 13468900 = 35519^2 + 3670^2 .

It is a cyclic number.

It is not a de Polignac number, because 1275068261 - 2² = 1275068257 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1275068231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 637534130 + 637534131.

It is an arithmetic number, because the mean of its divisors is an integer number (637534131).

Almost surely, 2^1275068261 is an apocalyptic number.

It is an amenable number.

1275068261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1275068261 is an equidigital number, since it uses as much as digits as its factorization.

1275068261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 1275068261 is about 35708.0979751092. The cubic root of 1275068261 is about 1084.3707936298.

The spelling of 1275068261 in words is "one billion, two hundred seventy-five million, sixty-eight thousand, two hundred sixty-one".