2555120520 has 96 divisors (see below), whose sum is σ = 8329178520. Its totient is φ = 679311360.

The previous prime is 2555120483. The next prime is 2555120563. The reversal of 2555120520 is 250215552.

It can be written as a sum of positive squares in 4 ways, for example, as 2420049636 + 135070884 = 49194^2 + 11622^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 110790 + ... + 131850.

Almost surely, 2^2555120520 is an apocalyptic number.

2555120520 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 2555120520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4164589260).

2555120520 is an abundant number, since it is smaller than the sum of its proper divisors (5774058000).

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

2555120520 is a wasteful number, since it uses less digits than its factorization.

2555120520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21415 (or 21408 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 27.

The square root of 2555120520 is about 50548.1999679514. The cubic root of 2555120520 is about 1367.1110593962. Note that the first 3 decimals are identical.

The spelling of 2555120520 in words is "two billion, five hundred fifty-five million, one hundred twenty thousand, five hundred twenty".