2505250443521 has 16 divisors (see below), whose sum is σ = 2987923378944. Its totient is φ = 2053790982144.

The previous prime is 2505250443511. The next prime is 2505250443523. The reversal of 2505250443521 is 1253440525052.

It is a cyclic number.

It is not a de Polignac number, because 2505250443521 - 2¹⁸ = 2505250181377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2505250443523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 874001 + ... + 2402993.

It is an arithmetic number, because the mean of its divisors is an integer number (186745211184).

Almost surely, 2^{2505250443521} is an apocalyptic number.

It is an amenable number.

2505250443521 is a deficient number, since it is larger than the sum of its proper divisors (482672935423).

2505250443521 is a wasteful number, since it uses less digits than its factorization.

2505250443521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1539200.

The product of its (nonzero) digits is 240000, while the sum is 38.

Adding to 2505250443521 its reverse (1253440525052), we get a palindrome (3758690968573).

The spelling of 2505250443521 in words is "two trillion, five hundred five billion, two hundred fifty million, four hundred forty-three thousand, five hundred twenty-one".