2521881252 has 144 divisors (see below), whose sum is σ = 7436886912. Its totient is φ = 712074240.

The previous prime is 2521881251. The next prime is 2521881277.

2521881252 is a `hidden beast` number, since 2 + 521 + 8 + 8 + 125 + 2 = 666.

2521881252 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (2521881251) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 691578 + ... + 695214.

It is an arithmetic number, because the mean of its divisors is an integer number (51645048).

Almost surely, 2^2521881252 is an apocalyptic number.

2521881252 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2521881252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3718443456).

2521881252 is an abundant number, since it is smaller than the sum of its proper divisors (4915005660).

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

2521881252 is a wasteful number, since it uses less digits than its factorization.

2521881252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3778 (or 3773 counting only the distinct ones).

The product of its digits is 25600, while the sum is 36.

The square root of 2521881252 is about 50218.3358147201. The cubic root of 2521881252 is about 1361.1569689044.

The spelling of 2521881252 in words is "two billion, five hundred twenty-one million, eight hundred eighty-one thousand, two hundred fifty-two".