1255778022 has 8 divisors (see below), whose sum is σ = 2511556056. Its totient is φ = 418592672.

The previous prime is 1255778021. The next prime is 1255778033. The reversal of 1255778022 is 2208775521.

It is a sphenic number, since it is the product of 3 distinct primes.

1255778022 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255778021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104648163 + ... + 104648174.

It is an arithmetic number, because the mean of its divisors is an integer number (313944507).

Almost surely, 2^1255778022 is an apocalyptic number.

1255778022 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1255778022 is a wasteful number, since it uses less digits than its factorization.

1255778022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209296342.

The product of its (nonzero) digits is 78400, while the sum is 39.

The square root of 1255778022 is about 35436.9584191420. The cubic root of 1255778022 is about 1078.8745769650.

The spelling of 1255778022 in words is "one billion, two hundred fifty-five million, seven hundred seventy-eight thousand, twenty-two".