25645323 has 16 divisors (see below), whose sum is σ = 37395072. Its totient is φ = 15504000.

The previous prime is 25645303. The next prime is 25645331. The reversal of 25645323 is 32354652.

It is not a de Polignac number, because 25645323 - 2¹⁰ = 25644299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25645303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18163 + ... + 19523.

It is an arithmetic number, because the mean of its divisors is an integer number (2337192).

Almost surely, 2^25645323 is an apocalyptic number.

25645323 is a deficient number, since it is larger than the sum of its proper divisors (11749749).

25645323 is a wasteful number, since it uses less digits than its factorization.

25645323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1946.

The product of its digits is 21600, while the sum is 30.

The square root of 25645323 is about 5064.1211478400. The cubic root of 25645323 is about 294.8963458489.

Adding to 25645323 its reverse (32354652), we get a palindrome (57999975).

It can be divided in two parts, 2564 and 5323, that added together give a palindrome (7887).

The spelling of 25645323 in words is "twenty-five million, six hundred forty-five thousand, three hundred twenty-three".