2521442250 has 128 divisors (see below), whose sum is σ = 7066725120. Its totient is φ = 665280000.

The previous prime is 2521442249. The next prime is 2521442311. The reversal of 2521442250 is 522441252.

2521442250 is a `hidden beast` number, since 25 + 214 + 422 + 5 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 652825 + ... + 656675.

It is an arithmetic number, because the mean of its divisors is an integer number (55208790).

Almost surely, 2^2521442250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2521442250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3533362560).

2521442250 is an abundant number, since it is smaller than the sum of its proper divisors (4545282870).

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

2521442250 is a wasteful number, since it uses less digits than its factorization.

2521442250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3974 (or 3958 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 2521442250 is about 50213.9646911096. The cubic root of 2521442250 is about 1361.0779821946.

The spelling of 2521442250 in words is "two billion, five hundred twenty-one million, four hundred forty-two thousand, two hundred fifty".