2556406622 has 64 divisors (see below), whose sum is σ = 5028839424. Its totient is φ = 945030240.

The previous prime is 2556406597. The next prime is 2556406651. The reversal of 2556406622 is 2266046552.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 446993 + ... + 452675.

It is an arithmetic number, because the mean of its divisors is an integer number (78575616).

Almost surely, 2^2556406622 is an apocalyptic number.

2556406622 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2556406622 is a deficient number, since it is larger than the sum of its proper divisors (2472432802).

2556406622 is a wasteful number, since it uses less digits than its factorization.

2556406622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5853.

The product of its (nonzero) digits is 172800, while the sum is 38.

The square root of 2556406622 is about 50560.9199085618. The cubic root of 2556406622 is about 1367.3403961778.

It can be divided in two parts, 255640 and 6622, that added together give a palindrome (262262).

The spelling of 2556406622 in words is "two billion, five hundred fifty-six million, four hundred six thousand, six hundred twenty-two".