25508123 has 2 divisors, whose sum is σ = 25508124. Its totient is φ = 25508122.

The previous prime is 25508113. The next prime is 25508179. The reversal of 25508123 is 32180552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25508123 - 2¹² = 25504027 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25508092 and 25508101.

It is not a weakly prime, because it can be changed into another prime (25508113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12754061 + 12754062.

It is an arithmetic number, because the mean of its divisors is an integer number (12754062).

Almost surely, 2^25508123 is an apocalyptic number.

25508123 is a deficient number, since it is larger than the sum of its proper divisors (1).

25508123 is an equidigital number, since it uses as much as digits as its factorization.

25508123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 25508123 is about 5050.5567019884. The cubic root of 25508123 is about 294.3695162481.

Adding to 25508123 its reverse (32180552), we get a palindrome (57688675).

The spelling of 25508123 in words is "twenty-five million, five hundred eight thousand, one hundred twenty-three".