2555003521520 has 160 divisors (see below), whose sum is σ = 6086465024640. Its totient is φ = 997199216640.

The previous prime is 2555003521493. The next prime is 2555003521571. The reversal of 2555003521520 is 251253005552.

It is a super-2 number, since 2×2555003521520² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 462776360 + ... + 462781880.

It is an arithmetic number, because the mean of its divisors is an integer number (38040406404).

Almost surely, 2^{2555003521520} is an apocalyptic number.

2555003521520 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 2555003521520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3043232512320).

2555003521520 is an abundant number, since it is smaller than the sum of its proper divisors (3531461503120).

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

2555003521520 is a wasteful number, since it uses less digits than its factorization.

2555003521520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6443 (or 6437 counting only the distinct ones).

The product of its (nonzero) digits is 75000, while the sum is 35.

The spelling of 2555003521520 in words is "two trillion, five hundred fifty-five billion, three million, five hundred twenty-one thousand, five hundred twenty".