1266004255 has 8 divisors (see below), whose sum is σ = 1519646832. Its totient is φ = 1012508928.

The previous prime is 1266004231. The next prime is 1266004261. The reversal of 1266004255 is 5524006621.

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

It is a cyclic number.

It is not a de Polignac number, because 1266004255 - 2²¹ = 1263907103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16917 + ... + 53086.

It is an arithmetic number, because the mean of its divisors is an integer number (189955854).

Almost surely, 2^1266004255 is an apocalyptic number.

1266004255 is a deficient number, since it is larger than the sum of its proper divisors (253642577).

1266004255 is an equidigital number, since it uses as much as digits as its factorization.

1266004255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73625.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 1266004255 is about 35580.9535425907. The cubic root of 1266004255 is about 1081.7952124435.

The spelling of 1266004255 in words is "one billion, two hundred sixty-six million, four thousand, two hundred fifty-five".