2564355442 has 16 divisors (see below), whose sum is σ = 4197608064. Its totient is φ = 1165230000.

The previous prime is 2564355419. The next prime is 2564355481. The reversal of 2564355442 is 2445534652.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2564355395 and 2564355404.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54967 + ... + 90277.

It is an arithmetic number, because the mean of its divisors is an integer number (262350504).

Almost surely, 2^2564355442 is an apocalyptic number.

2564355442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2564355442 is a deficient number, since it is larger than the sum of its proper divisors (1633252622).

2564355442 is a wasteful number, since it uses less digits than its factorization.

2564355442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38625.

The product of its digits is 576000, while the sum is 40.

The square root of 2564355442 is about 50639.4652617896. The cubic root of 2564355442 is about 1368.7561199813.

The spelling of 2564355442 in words is "two billion, five hundred sixty-four million, three hundred fifty-five thousand, four hundred forty-two".