1256018226 has 16 divisors (see below), whose sum is σ = 2512404864. Its totient is φ = 418611344.

The previous prime is 1256018171. The next prime is 1256018249. The reversal of 1256018226 is 6228106521.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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, 51100 + ... + 71576.

It is an arithmetic number, because the mean of its divisors is an integer number (157025304).

Almost surely, 2^1256018226 is an apocalyptic number.

1256018226 is an abundant number, since it is smaller than the sum of its proper divisors (1256386638).

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

1256018226 is a wasteful number, since it uses less digits than its factorization.

1256018226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30705.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 1256018226 is about 35440.3474305769. The cubic root of 1256018226 is about 1078.9433612732.

The spelling of 1256018226 in words is "one billion, two hundred fifty-six million, eighteen thousand, two hundred twenty-six".