2564651222 has 8 divisors (see below), whose sum is σ = 4396544976. Its totient is φ = 1099136232.

The previous prime is 2564651207. The next prime is 2564651233. The reversal of 2564651222 is 2221564652.

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

It is a congruent number.

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, 91594673 + ... + 91594700.

It is an arithmetic number, because the mean of its divisors is an integer number (549568122).

Almost surely, 2^2564651222 is an apocalyptic number.

2564651222 is a deficient number, since it is larger than the sum of its proper divisors (1831893754).

2564651222 is a wasteful number, since it uses less digits than its factorization.

2564651222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183189382.

The product of its digits is 57600, while the sum is 35.

The square root of 2564651222 is about 50642.3856270614. The cubic root of 2564651222 is about 1368.8087433571.

The spelling of 2564651222 in words is "two billion, five hundred sixty-four million, six hundred fifty-one thousand, two hundred twenty-two".