25115323523 has 2 divisors, whose sum is σ = 25115323524. Its totient is φ = 25115323522.

The previous prime is 25115323367. The next prime is 25115323543. The reversal of 25115323523 is 32532351152.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25115323523 - 2²⁴ = 25098546307 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25115323523.

It is not a weakly prime, because it can be changed into another prime (25115323543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12557661761 + 12557661762.

It is an arithmetic number, because the mean of its divisors is an integer number (12557661762).

Almost surely, 2^25115323523 is an apocalyptic number.

25115323523 is a deficient number, since it is larger than the sum of its proper divisors (1).

25115323523 is an equidigital number, since it uses as much as digits as its factorization.

25115323523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27000, while the sum is 32.

Adding to 25115323523 its reverse (32532351152), we get a palindrome (57647674675).

The spelling of 25115323523 in words is "twenty-five billion, one hundred fifteen million, three hundred twenty-three thousand, five hundred twenty-three".