2505534123 has 32 divisors (see below), whose sum is σ = 3579932160. Its totient is φ = 1554094080.

The previous prime is 2505534121. The next prime is 2505534127. The reversal of 2505534123 is 3214355052.

It is not a de Polignac number, because 2505534123 - 2¹ = 2505534121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2505534121) 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, 1184715 + ... + 1186827.

It is an arithmetic number, because the mean of its divisors is an integer number (111872880).

Almost surely, 2^2505534123 is an apocalyptic number.

2505534123 is a deficient number, since it is larger than the sum of its proper divisors (1074398037).

2505534123 is a wasteful number, since it uses less digits than its factorization.

2505534123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2499.

The product of its (nonzero) digits is 18000, while the sum is 30.

The square root of 2505534123 is about 50055.3106373340. The cubic root of 2505534123 is about 1358.2095316411.

Adding to 2505534123 its reverse (3214355052), we get a palindrome (5719889175).

The spelling of 2505534123 in words is "two billion, five hundred five million, five hundred thirty-four thousand, one hundred twenty-three".