1255166226 has 64 divisors (see below), whose sum is σ = 2915539200. Its totient is φ = 399748608.

The previous prime is 1255166191. The next prime is 1255166243. The reversal of 1255166226 is 6226615521.

1255166226 is a `hidden beast` number, since 1 + 25 + 5 + 1 + 6 + 622 + 6 = 666.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 147771 + ... + 156033.

It is an arithmetic number, because the mean of its divisors is an integer number (45555300).

Almost surely, 2^1255166226 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1255166226, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1457769600).

1255166226 is an abundant number, since it is smaller than the sum of its proper divisors (1660372974).

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

1255166226 is a wasteful number, since it uses less digits than its factorization.

1255166226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8400 (or 8394 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 1255166226 is about 35428.3251932687. The cubic root of 1255166226 is about 1078.6993447299.

The spelling of 1255166226 in words is "one billion, two hundred fifty-five million, one hundred sixty-six thousand, two hundred twenty-six".