2565225654 has 16 divisors (see below), whose sum is σ = 5146951680. Its totient is φ = 852325160.

The previous prime is 2565225647. The next prime is 2565225661. The reversal of 2565225654 is 4565225652.

It is an interprime number because it is at equal distance from previous prime (2565225647) and next prime (2565225661).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

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, 685494 + ... + 689225.

It is an arithmetic number, because the mean of its divisors is an integer number (321684480).

Almost surely, 2^2565225654 is an apocalyptic number.

2565225654 is an abundant number, since it is smaller than the sum of its proper divisors (2581726026).

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

2565225654 is a wasteful number, since it uses less digits than its factorization.

2565225654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1375035.

The product of its digits is 720000, while the sum is 42.

The square root of 2565225654 is about 50648.0567643024. The cubic root of 2565225654 is about 1368.9109312414.

The spelling of 2565225654 in words is "two billion, five hundred sixty-five million, two hundred twenty-five thousand, six hundred fifty-four".