1266541275 has 12 divisors (see below), whose sum is σ = 2094015032. Its totient is φ = 675488640.

The previous prime is 1266541249. The next prime is 1266541303. The reversal of 1266541275 is 5721456621.

It is not a de Polignac number, because 1266541275 - 2⁷ = 1266541147 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8443534 + ... + 8443683.

Almost surely, 2^1266541275 is an apocalyptic number.

1266541275 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1266541275 is a deficient number, since it is larger than the sum of its proper divisors (827473757).

1266541275 is a wasteful number, since it uses less digits than its factorization.

1266541275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16887230 (or 16887225 counting only the distinct ones).

The product of its digits is 100800, while the sum is 39.

The square root of 1266541275 is about 35588.4991956671. The cubic root of 1266541275 is about 1081.9481512505.

Adding to 1266541275 its reverse (5721456621), we get a palindrome (6987997896).

The spelling of 1266541275 in words is "one billion, two hundred sixty-six million, five hundred forty-one thousand, two hundred seventy-five".