5255420744728 has 256 divisors, whose sum is σ = 12659258327040. Its totient is φ = 1986199488000.

The previous prime is 5255420744711. The next prime is 5255420744747. The reversal of 5255420744728 is 8274470245525.

It is a super-2 number, since 2×5255420744728² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3534243201 + ... + 3534244687.

It is an arithmetic number, because the mean of its divisors is an integer number (49450227840).

Almost surely, 2^{5255420744728} 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 5255420744728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6329629163520).

5255420744728 is an abundant number, since it is smaller than the sum of its proper divisors (7403837582312).

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

5255420744728 is a wasteful number, since it uses less digits than its factorization.

5255420744728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2718 (or 2714 counting only the distinct ones).

The product of its (nonzero) digits is 25088000, while the sum is 55.

The spelling of 5255420744728 in words is "five trillion, two hundred fifty-five billion, four hundred twenty million, seven hundred forty-four thousand, seven hundred twenty-eight".