1266256411 has 8 divisors (see below), whose sum is σ = 1493832704. Its totient is φ = 1050350760.

The previous prime is 1266256393. The next prime is 1266256447. The reversal of 1266256411 is 1146526621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1266256411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1266256451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2917425 + ... + 2917858.

It is an arithmetic number, because the mean of its divisors is an integer number (186729088).

Almost surely, 2^1266256411 is an apocalyptic number.

1266256411 is a deficient number, since it is larger than the sum of its proper divisors (227576293).

1266256411 is an equidigital number, since it uses as much as digits as its factorization.

1266256411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5835321.

The product of its digits is 17280, while the sum is 34.

The square root of 1266256411 is about 35584.4967787940. The cubic root of 1266256411 is about 1081.8670297496.

The spelling of 1266256411 in words is "one billion, two hundred sixty-six million, two hundred fifty-six thousand, four hundred eleven".