2565424444 has 24 divisors (see below), whose sum is σ = 4907726208. Its totient is φ = 1163697840.

The previous prime is 2565424409. The next prime is 2565424471. The reversal of 2565424444 is 4444245652.

It is a junction number, because it is equal to n+sod(n) for n = 2565424397 and 2565424406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38434 + ... + 81289.

It is an arithmetic number, because the mean of its divisors is an integer number (204488592).

Almost surely, 2^2565424444 is an apocalyptic number.

It is an amenable number.

2565424444 is a deficient number, since it is larger than the sum of its proper divisors (2342301764).

2565424444 is a wasteful number, since it uses less digits than its factorization.

2565424444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120225 (or 120223 counting only the distinct ones).

The product of its digits is 614400, while the sum is 40.

The square root of 2565424444 is about 50650.0191905196. The cubic root of 2565424444 is about 1368.9462911943.

The spelling of 2565424444 in words is "two billion, five hundred sixty-five million, four hundred twenty-four thousand, four hundred forty-four".