2565225648 has 30 divisors (see below), whose sum is σ = 7179069404. Its totient is φ = 855075168.

The previous prime is 2565225647. The next prime is 2565225661. The reversal of 2565225648 is 8465225652.

It is a happy number.

2565225648 is a `hidden beast` number, since 2 + 5 + 65 + 22 + 564 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (2565225647) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8906890 + ... + 8907177.

Almost surely, 2^2565225648 is an apocalyptic number.

It is an amenable number.

2565225648 is an abundant number, since it is smaller than the sum of its proper divisors (4613843756).

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

2565225648 is a wasteful number, since it uses less digits than its factorization.

2565225648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17814081 (or 17814072 counting only the distinct ones).

The product of its digits is 1152000, while the sum is 45.

The square root of 2565225648 is about 50648.0567050701. The cubic root of 2565225648 is about 1368.9109301741.

The spelling of 2565225648 in words is "two billion, five hundred sixty-five million, two hundred twenty-five thousand, six hundred forty-eight".