2555505440 has 48 divisors (see below), whose sum is σ = 6044750712. Its totient is φ = 1020954624.

The previous prime is 2555505401. The next prime is 2555505497. The reversal of 2555505440 is 445055552.

It can be written as a sum of positive squares in 4 ways, for example, as 1800135184 + 755370256 = 42428^2 + 27484^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2555505440.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127802 + ... + 146438.

Almost surely, 2^2555505440 is an apocalyptic number.

2555505440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2555505440 is an abundant number, since it is smaller than the sum of its proper divisors (3489245272).

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

2555505440 is a wasteful number, since it uses less digits than its factorization.

2555505440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19509 (or 19501 counting only the distinct ones).

The product of its (nonzero) digits is 100000, while the sum is 35.

The square root of 2555505440 is about 50552.0072796323. The cubic root of 2555505440 is about 1367.1797061211.

The spelling of 2555505440 in words is "two billion, five hundred fifty-five million, five hundred five thousand, four hundred forty".