2521261276205 has 32 divisors (see below), whose sum is σ = 3460307558400. Its totient is φ = 1727576589312.

The previous prime is 2521261276199. The next prime is 2521261276207. The reversal of 2521261276205 is 5026721621252.

It is a happy number.

2521261276205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2521261276205 - 2⁴ = 2521261276189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521261276207) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 458158484 + ... + 458163986.

It is an arithmetic number, because the mean of its divisors is an integer number (108134611200).

Almost surely, 2^{2521261276205} is an apocalyptic number.

It is an amenable number.

2521261276205 is a deficient number, since it is larger than the sum of its proper divisors (939046282195).

2521261276205 is a wasteful number, since it uses less digits than its factorization.

2521261276205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12893.

The product of its (nonzero) digits is 201600, while the sum is 41.

Adding to 2521261276205 its reverse (5026721621252), we get a palindrome (7547982897457).

The spelling of 2521261276205 in words is "two trillion, five hundred twenty-one billion, two hundred sixty-one million, two hundred seventy-six thousand, two hundred five".