2505543220 has 24 divisors (see below), whose sum is σ = 5267404800. Its totient is φ = 1001119392.

The previous prime is 2505543217. The next prime is 2505543239. The reversal of 2505543220 is 223455052.

2505543220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49780 + ... + 86539.

It is an arithmetic number, because the mean of its divisors is an integer number (219475200).

Almost surely, 2^2505543220 is an apocalyptic number.

2505543220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2505543220 is an abundant number, since it is smaller than the sum of its proper divisors (2761861580).

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

2505543220 is a wasteful number, since it uses less digits than its factorization.

2505543220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137247 (or 137245 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 28.

The square root of 2505543220 is about 50055.4015067305. The cubic root of 2505543220 is about 1358.2111754179.

Adding to 2505543220 its reverse (223455052), we get a palindrome (2728998272).

The spelling of 2505543220 in words is "two billion, five hundred five million, five hundred forty-three thousand, two hundred twenty".