2566021322 has 4 divisors (see below), whose sum is σ = 3849031986. Its totient is φ = 1283010660.

The previous prime is 2566021313. The next prime is 2566021343. The reversal of 2566021322 is 2231206652.

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., 2564510881 + 1510441 = 50641^2 + 1229^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 641505329 + ... + 641505332.

Almost surely, 2^2566021322 is an apocalyptic number.

2566021322 is a deficient number, since it is larger than the sum of its proper divisors (1283010664).

2566021322 is a wasteful number, since it uses less digits than its factorization.

2566021322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1283010663.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 2566021322 is about 50655.9110272434. The cubic root of 2566021322 is about 1369.0524504389.

Adding to 2566021322 its reverse (2231206652), we get a palindrome (4797227974).

The spelling of 2566021322 in words is "two billion, five hundred sixty-six million, twenty-one thousand, three hundred twenty-two".