25505323 has 2 divisors, whose sum is σ = 25505324. Its totient is φ = 25505322.

The previous prime is 25505317. The next prime is 25505327. The reversal of 25505323 is 32350552.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25505323 is a prime.

It is not a weakly prime, because it can be changed into another prime (25505327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12752661 + 12752662.

It is an arithmetic number, because the mean of its divisors is an integer number (12752662).

Almost surely, 2^25505323 is an apocalyptic number.

25505323 is a deficient number, since it is larger than the sum of its proper divisors (1).

25505323 is an equidigital number, since it uses as much as digits as its factorization.

25505323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4500, while the sum is 25.

The square root of 25505323 is about 5050.2794972160. The cubic root of 25505323 is about 294.3587449760.

Adding to 25505323 its reverse (32350552), we get a palindrome (57855875).

The spelling of 25505323 in words is "twenty-five million, five hundred five thousand, three hundred twenty-three".