2555540500420 has 24 divisors (see below), whose sum is σ = 5599967010624. Its totient is φ = 977772017376.

The previous prime is 2555540500367. The next prime is 2555540500421. The reversal of 2555540500420 is 240050455552.

It is a self number, because there is not a number n which added to its sum of digits gives 2555540500420.

It is not an unprimeable number, because it can be changed into a prime (2555540500421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2777760954 + ... + 2777761873.

It is an arithmetic number, because the mean of its divisors is an integer number (233331958776).

Almost surely, 2^{2555540500420} is an apocalyptic number.

2555540500420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2555540500420 is an abundant number, since it is smaller than the sum of its proper divisors (3044426510204).

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

2555540500420 is a wasteful number, since it uses less digits than its factorization.

2555540500420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5555522859 (or 5555522857 counting only the distinct ones).

The product of its (nonzero) digits is 200000, while the sum is 37.

Adding to 2555540500420 its reverse (240050455552), we get a palindrome (2795590955972).

The spelling of 2555540500420 in words is "two trillion, five hundred fifty-five billion, five hundred forty million, five hundred thousand, four hundred twenty".