2580561500 has 48 divisors (see below), whose sum is σ = 6148318176. Its totient is φ = 938384000.

The previous prime is 2580561409. The next prime is 2580561539. The reversal of 2580561500 is 51650852.

2580561500 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 15 ways as a sum of consecutive naturals, for example, 229097 + ... + 240096.

It is an arithmetic number, because the mean of its divisors is an integer number (128089962).

Almost surely, 2^2580561500 is an apocalyptic number.

2580561500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2580561500 is an abundant number, since it is smaller than the sum of its proper divisors (3567756676).

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

2580561500 is a wasteful number, since it uses less digits than its factorization.

2580561500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469223 (or 469211 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 32.

The square root of 2580561500 is about 50799.2273563290. The cubic root of 2580561500 is about 1371.6334610900.

The spelling of 2580561500 in words is "two billion, five hundred eighty million, five hundred sixty-one thousand, five hundred".