2505311121 has 16 divisors (see below), whose sum is σ = 3403008000. Its totient is φ = 1639165008.

The previous prime is 2505311111. The next prime is 2505311129. The reversal of 2505311121 is 1211135052.

It is not a de Polignac number, because 2505311121 - 2⁵ = 2505311089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2505311129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7930 + ... + 71228.

It is an arithmetic number, because the mean of its divisors is an integer number (212688000).

Almost surely, 2^2505311121 is an apocalyptic number.

It is an amenable number.

2505311121 is a deficient number, since it is larger than the sum of its proper divisors (897696879).

2505311121 is a wasteful number, since it uses less digits than its factorization.

2505311121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63548.

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 2505311121 is about 50053.0830319172. The cubic root of 2505311121 is about 1358.1692351862.

Adding to 2505311121 its reverse (1211135052), we get a palindrome (3716446173).

The spelling of 2505311121 in words is "two billion, five hundred five million, three hundred eleven thousand, one hundred twenty-one".