2564515322 has 4 divisors (see below), whose sum is σ = 3846772986. Its totient is φ = 1282257660.

The previous prime is 2564515319. The next prime is 2564515337. The reversal of 2564515322 is 2235154652.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2078356921 + 486158401 = 45589^2 + 22049^2 .

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 as a sum of consecutive naturals, namely, 641128829 + ... + 641128832.

Almost surely, 2^2564515322 is an apocalyptic number.

2564515322 is a deficient number, since it is larger than the sum of its proper divisors (1282257664).

2564515322 is a wasteful number, since it uses less digits than its factorization.

2564515322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1282257663.

The product of its digits is 72000, while the sum is 35.

The square root of 2564515322 is about 50641.0438478513. The cubic root of 2564515322 is about 1368.7845653594.

Adding to 2564515322 its reverse (2235154652), we get a palindrome (4799669974).

The spelling of 2564515322 in words is "two billion, five hundred sixty-four million, five hundred fifteen thousand, three hundred twenty-two".