2568745530 has 96 divisors (see below), whose sum is σ = 7368051600. Its totient is φ = 616872960.

The previous prime is 2568745523. The next prime is 2568745549. The reversal of 2568745530 is 355478652.

2568745530 is a `hidden beast` number, since 2 + 568 + 7 + 4 + 55 + 30 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 34327881 + 2534417649 = 5859^2 + 50343^2 .

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 47 ways as a sum of consecutive naturals, for example, 21196 + ... + 74744.

Almost surely, 2^2568745530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2568745530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3684025800).

2568745530 is an abundant number, since it is smaller than the sum of its proper divisors (4799306070).

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

2568745530 is a wasteful number, since it uses less digits than its factorization.

2568745530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53616 (or 53613 counting only the distinct ones).

The product of its (nonzero) digits is 1008000, while the sum is 45.

The square root of 2568745530 is about 50682.7932339961. The cubic root of 2568745530 is about 1369.5367624165.

It can be divided in two parts, 25687 and 45530, that added together give a palindrome (71217).

The spelling of 2568745530 in words is "two billion, five hundred sixty-eight million, seven hundred forty-five thousand, five hundred thirty".