2556325421760 has 224 divisors, whose sum is σ = 8855694508032. Its totient is φ = 619609374720.

The previous prime is 2556325421743. The next prime is 2556325421843. The reversal of 2556325421760 is 671245236552.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74504769 + ... + 74539071.

Almost surely, 2^{2556325421760} is an apocalyptic number.

2556325421760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2556325421760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4427847254016).

2556325421760 is an abundant number, since it is smaller than the sum of its proper divisors (6299369086272).

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

2556325421760 is a wasteful number, since it uses less digits than its factorization.

2556325421760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41391 (or 41381 counting only the distinct ones).

The product of its (nonzero) digits is 3024000, while the sum is 48.

The spelling of 2556325421760 in words is "two trillion, five hundred fifty-six billion, three hundred twenty-five million, four hundred twenty-one thousand, seven hundred sixty".