2521561250 has 80 divisors (see below), whose sum is σ = 5358534720. Its totient is φ = 881928000.

The previous prime is 2521561241. The next prime is 2521561279. The reversal of 2521561250 is 521651252.

2521561250 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2521561250² = 12716542275003125000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 304667 + ... + 312833.

It is an arithmetic number, because the mean of its divisors is an integer number (66981684).

Almost surely, 2^2521561250 is an apocalyptic number.

2521561250 is an abundant number, since it is smaller than the sum of its proper divisors (2836973470).

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

2521561250 is a wasteful number, since it uses less digits than its factorization.

2521561250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8221 (or 8206 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 2521561250 is about 50215.1496064684. The cubic root of 2521561250 is about 1361.0993939788.

The spelling of 2521561250 in words is "two billion, five hundred twenty-one million, five hundred sixty-one thousand, two hundred fifty".