2505120243 has 4 divisors (see below), whose sum is σ = 3340160328. Its totient is φ = 1670080160.

The previous prime is 2505120223. The next prime is 2505120259. The reversal of 2505120243 is 3420215052.

2505120243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2505120243 - 2⁶ = 2505120179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2505120223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 417520038 + ... + 417520043.

It is an arithmetic number, because the mean of its divisors is an integer number (835040082).

Almost surely, 2^2505120243 is an apocalyptic number.

2505120243 is a deficient number, since it is larger than the sum of its proper divisors (835040085).

2505120243 is an equidigital number, since it uses as much as digits as its factorization.

2505120243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835040084.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 2505120243 is about 50051.1762399247. The cubic root of 2505120243 is about 1358.1347416377.

Adding to 2505120243 its reverse (3420215052), we get a palindrome (5925335295).

The spelling of 2505120243 in words is "two billion, five hundred five million, one hundred twenty thousand, two hundred forty-three".