2521225140 has 192 divisors, whose sum is σ = 8723097600. Its totient is φ = 531131904.

The previous prime is 2521225139. The next prime is 2521225141. The reversal of 2521225140 is 415221252.

It is an interprime number because it is at equal distance from previous prime (2521225139) and next prime (2521225141).

It is a self number, because there is not a number n which added to its sum of digits gives 2521225140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521225141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 290991 + ... + 299529.

It is an arithmetic number, because the mean of its divisors is an integer number (45432800).

Almost surely, 2^2521225140 is an apocalyptic number.

2521225140 is a gapful number since it is divisible by the number (20) 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 2521225140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4361548800).

2521225140 is an abundant number, since it is smaller than the sum of its proper divisors (6201872460).

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

2521225140 is a wasteful number, since it uses less digits than its factorization.

2521225140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8614 (or 8612 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 2521225140 is about 50211.8027957571. The cubic root of 2521225140 is about 1361.0389156481.

Adding to 2521225140 its reverse (415221252), we get a palindrome (2936446392).

The spelling of 2521225140 in words is "two billion, five hundred twenty-one million, two hundred twenty-five thousand, one hundred forty".