2542561220 has 24 divisors (see below), whose sum is σ = 5571526464. Its totient is φ = 972805856.

The previous prime is 2542561159. The next prime is 2542561223. The reversal of 2542561220 is 221652452.

2542561220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (2542561223) 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, 2763194 + ... + 2764113.

It is an arithmetic number, because the mean of its divisors is an integer number (232146936).

Almost surely, 2^2542561220 is an apocalyptic number.

2542561220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2542561220 is an abundant number, since it is smaller than the sum of its proper divisors (3028965244).

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

2542561220 is a wasteful number, since it uses less digits than its factorization.

2542561220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5527339 (or 5527337 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 2542561220 is about 50423.8159999816. The cubic root of 2542561220 is about 1364.8674382755.

The spelling of 2542561220 in words is "two billion, five hundred forty-two million, five hundred sixty-one thousand, two hundred twenty".