1266650255 has 32 divisors (see below), whose sum is σ = 1697492160. Its totient is φ = 900910080.

The previous prime is 1266650251. The next prime is 1266650293. The reversal of 1266650255 is 5520566621.

It is a happy number.

It is not a de Polignac number, because 1266650255 - 2² = 1266650251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1266650251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1434044 + ... + 1434926.

It is an arithmetic number, because the mean of its divisors is an integer number (53046630).

Almost surely, 2^1266650255 is an apocalyptic number.

1266650255 is a deficient number, since it is larger than the sum of its proper divisors (430841905).

1266650255 is a wasteful number, since it uses less digits than its factorization.

1266650255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1691.

The product of its (nonzero) digits is 108000, while the sum is 38.

The square root of 1266650255 is about 35590.0302753454. The cubic root of 1266650255 is about 1081.9791825666.

The spelling of 1266650255 in words is "one billion, two hundred sixty-six million, six hundred fifty thousand, two hundred fifty-five".