25423613 has 2 divisors, whose sum is σ = 25423614. Its totient is φ = 25423612.

The previous prime is 25423589. The next prime is 25423639. The reversal of 25423613 is 31632452.

It is an a-pointer prime, because the next prime (25423639) can be obtained adding 25423613 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25421764 + 1849 = 5042^2 + 43^2 .

It is a cyclic number.

It is not a de Polignac number, because 25423613 - 2¹² = 25419517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25453613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12711806 + 12711807.

It is an arithmetic number, because the mean of its divisors is an integer number (12711807).

Almost surely, 2^25423613 is an apocalyptic number.

It is an amenable number.

25423613 is a deficient number, since it is larger than the sum of its proper divisors (1).

25423613 is an equidigital number, since it uses as much as digits as its factorization.

25423613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 26.

The square root of 25423613 is about 5042.1833564439. The cubic root of 25423613 is about 294.0440683938.

The spelling of 25423613 in words is "twenty-five million, four hundred twenty-three thousand, six hundred thirteen".