2564521322 has 16 divisors (see below), whose sum is σ = 4198388544. Its totient is φ = 1165164000.

The previous prime is 2564521303. The next prime is 2564521331. The reversal of 2564521322 is 2231254652.

It is a super-2 number, since 2×2564521322² = 13153539221985255368, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25622 + ... + 76062.

It is an arithmetic number, because the mean of its divisors is an integer number (262399284).

Almost surely, 2^2564521322 is an apocalyptic number.

2564521322 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2564521322 is a deficient number, since it is larger than the sum of its proper divisors (1633867222).

2564521322 is a wasteful number, since it uses less digits than its factorization.

2564521322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52765.

The product of its digits is 28800, while the sum is 32.

The square root of 2564521322 is about 50641.1030883017. The cubic root of 2564521322 is about 1368.7856328387.

Adding to 2564521322 its reverse (2231254652), we get a palindrome (4795775974).

The spelling of 2564521322 in words is "two billion, five hundred sixty-four million, five hundred twenty-one thousand, three hundred twenty-two".