25365823 has 4 divisors (see below), whose sum is σ = 28989520. Its totient is φ = 21742128.

The previous prime is 25365799. The next prime is 25365827. The reversal of 25365823 is 32856352.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25365823 is a prime.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25365827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1811838 + ... + 1811851.

It is an arithmetic number, because the mean of its divisors is an integer number (7247380).

Almost surely, 2^25365823 is an apocalyptic number.

25365823 is a deficient number, since it is larger than the sum of its proper divisors (3623697).

25365823 is an equidigital number, since it uses as much as digits as its factorization.

25365823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3623696.

The product of its digits is 43200, while the sum is 34.

The square root of 25365823 is about 5036.4494438046. The cubic root of 25365823 is about 293.8211037774.

The spelling of 25365823 in words is "twenty-five million, three hundred sixty-five thousand, eight hundred twenty-three".