2778222085 has 32 divisors (see below), whose sum is σ = 3548160000. Its totient is φ = 2082459456.

The previous prime is 2778222053. The next prime is 2778222103. The reversal of 2778222085 is 5802228772.

It is a cyclic number.

It is not a de Polignac number, because 2778222085 - 2⁵ = 2778222053 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4215486 + ... + 4216144.

It is an arithmetic number, because the mean of its divisors is an integer number (110880000).

Almost surely, 2^2778222085 is an apocalyptic number.

It is an amenable number.

2778222085 is a deficient number, since it is larger than the sum of its proper divisors (769937915).

2778222085 is a wasteful number, since it uses less digits than its factorization.

2778222085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105.

The product of its (nonzero) digits is 250880, while the sum is 43.

The square root of 2778222085 is about 52708.8425693450. The cubic root of 2778222085 is about 1405.7960534855.

The spelling of 2778222085 in words is "two billion, seven hundred seventy-eight million, two hundred twenty-two thousand, eighty-five".