1255556012 has 12 divisors (see below), whose sum is σ = 2326471560. Its totient is φ = 590849856.

The previous prime is 1255555991. The next prime is 1255556021. The reversal of 1255556012 is 2106555521.

It is a self number, because there is not a number n which added to its sum of digits gives 1255556012.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9231962 + ... + 9232097.

It is an arithmetic number, because the mean of its divisors is an integer number (193872630).

Almost surely, 2^1255556012 is an apocalyptic number.

It is an amenable number.

1255556012 is a deficient number, since it is larger than the sum of its proper divisors (1070915548).

1255556012 is a wasteful number, since it uses less digits than its factorization.

1255556012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18464080 (or 18464078 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 32.

The square root of 1255556012 is about 35433.8258165838. The cubic root of 1255556012 is about 1078.8109948517.

The spelling of 1255556012 in words is "one billion, two hundred fifty-five million, five hundred fifty-six thousand, twelve".