25504015123 has 2 divisors, whose sum is σ = 25504015124. Its totient is φ = 25504015122.

The previous prime is 25504015073. The next prime is 25504015139. The reversal of 25504015123 is 32151040552.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25504015123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25504015091 and 25504015100.

It is not a weakly prime, because it can be changed into another prime (25504015193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12752007561 + 12752007562.

It is an arithmetic number, because the mean of its divisors is an integer number (12752007562).

Almost surely, 2^25504015123 is an apocalyptic number.

25504015123 is a deficient number, since it is larger than the sum of its proper divisors (1).

25504015123 is an equidigital number, since it uses as much as digits as its factorization.

25504015123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6000, while the sum is 28.

Adding to 25504015123 its reverse (32151040552), we get a palindrome (57655055675).

The spelling of 25504015123 in words is "twenty-five billion, five hundred four million, fifteen thousand, one hundred twenty-three".