25323613 has 4 divisors (see below), whose sum is σ = 28941280. Its totient is φ = 21705948.

The previous prime is 25323607. The next prime is 25323631. The reversal of 25323613 is 31632352.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25323613 - 2⁵ = 25323581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25321613) 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 3 ways as a sum of consecutive naturals, for example, 1808823 + ... + 1808836.

It is an arithmetic number, because the mean of its divisors is an integer number (7235320).

Almost surely, 2^25323613 is an apocalyptic number.

It is an amenable number.

25323613 is a deficient number, since it is larger than the sum of its proper divisors (3617667).

25323613 is an equidigital number, since it uses as much as digits as its factorization.

25323613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3617666.

The product of its digits is 3240, while the sum is 25.

The square root of 25323613 is about 5032.2572470016. The cubic root of 25323613 is about 293.6580356149.

Adding to 25323613 its reverse (31632352), we get a palindrome (56955965).

The spelling of 25323613 in words is "twenty-five million, three hundred twenty-three thousand, six hundred thirteen".