1255278786 has 16 divisors (see below), whose sum is σ = 2511194400. Its totient is φ = 418320128.

The previous prime is 1255278781. The next prime is 1255278799. The reversal of 1255278786 is 6878725521.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1255278781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1345 + ... + 50123.

It is an arithmetic number, because the mean of its divisors is an integer number (156949650).

Almost surely, 2^1255278786 is an apocalyptic number.

1255278786 is an abundant number, since it is smaller than the sum of its proper divisors (1255915614).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1255278786 is a wasteful number, since it uses less digits than its factorization.

1255278786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53073.

The product of its digits is 1881600, while the sum is 51.

The square root of 1255278786 is about 35429.9137170838. The cubic root of 1255278786 is about 1078.7315887378.

The spelling of 1255278786 in words is "one billion, two hundred fifty-five million, two hundred seventy-eight thousand, seven hundred eighty-six".