2565481896 has 80 divisors (see below), whose sum is σ = 7307625600. Its totient is φ = 840653856.

The previous prime is 2565481823. The next prime is 2565481937. The reversal of 2565481896 is 6981845652.

2565481896 is a `hidden beast` number, since 2 + 5 + 6 + 548 + 1 + 8 + 96 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4681 + ... + 71783.

It is an arithmetic number, because the mean of its divisors is an integer number (91345320).

Almost surely, 2^2565481896 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2565481896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3653812800).

2565481896 is an abundant number, since it is smaller than the sum of its proper divisors (4742143704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2565481896 is a wasteful number, since it uses less digits than its factorization.

2565481896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67180 (or 67167 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 54.

The square root of 2565481896 is about 50650.5863342173. The cubic root of 2565481896 is about 1368.9565101810.

The spelling of 2565481896 in words is "two billion, five hundred sixty-five million, four hundred eighty-one thousand, eight hundred ninety-six".