2582722642 has 4 divisors (see below), whose sum is σ = 3874083966. Its totient is φ = 1291361320.

The previous prime is 2582722609. The next prime is 2582722651. The reversal of 2582722642 is 2462272852.

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., 2474167081 + 108555561 = 49741^2 + 10419^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2582722595 and 2582722604.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 645680659 + ... + 645680662.

Almost surely, 2^2582722642 is an apocalyptic number.

2582722642 is a deficient number, since it is larger than the sum of its proper divisors (1291361324).

2582722642 is a wasteful number, since it uses less digits than its factorization.

2582722642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1291361323.

The product of its digits is 215040, while the sum is 40.

The square root of 2582722642 is about 50820.4943108585. The cubic root of 2582722642 is about 1372.0162547267.

The spelling of 2582722642 in words is "two billion, five hundred eighty-two million, seven hundred twenty-two thousand, six hundred forty-two".