25105523 has 2 divisors, whose sum is σ = 25105524. Its totient is φ = 25105522.

The previous prime is 25105477. The next prime is 25105537. The reversal of 25105523 is 32550152.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25105523 - 2²⁰ = 24056947 is a prime.

It is not a weakly prime, because it can be changed into another prime (25105123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12552761 + 12552762.

It is an arithmetic number, because the mean of its divisors is an integer number (12552762).

Almost surely, 2^25105523 is an apocalyptic number.

25105523 is a deficient number, since it is larger than the sum of its proper divisors (1).

25105523 is an equidigital number, since it uses as much as digits as its factorization.

25105523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 25105523 is about 5010.5411883348. The cubic root of 25105523 is about 292.8125978423.

Adding to 25105523 its reverse (32550152), we get a palindrome (57655675).

The spelling of 25105523 in words is "twenty-five million, one hundred five thousand, five hundred twenty-three".