2565246222 has 144 divisors (see below), whose sum is σ = 7048510560. Its totient is φ = 659957760.

The previous prime is 2565246217. The next prime is 2565246239. The reversal of 2565246222 is 2226425652.

2565246222 is a `hidden beast` number, since 2 + 5 + 6 + 5 + 24 + 622 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1722054 + ... + 1723542.

It is an arithmetic number, because the mean of its divisors is an integer number (48947990).

Almost surely, 2^2565246222 is an apocalyptic number.

2565246222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 2565246222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3524255280).

2565246222 is an abundant number, since it is smaller than the sum of its proper divisors (4483264338).

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

2565246222 is a wasteful number, since it uses less digits than its factorization.

2565246222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1639 (or 1625 counting only the distinct ones).

The product of its digits is 115200, while the sum is 36.

The square root of 2565246222 is about 50648.2598121594. The cubic root of 2565246222 is about 1368.9145898779.

The spelling of 2565246222 in words is "two billion, five hundred sixty-five million, two hundred forty-six thousand, two hundred twenty-two".