25824013 has 2 divisors, whose sum is σ = 25824014. Its totient is φ = 25824012.

The previous prime is 25823989. The next prime is 25824017. The reversal of 25824013 is 31042852.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15468489 + 10355524 = 3933^2 + 3218^2 .

It is a cyclic number.

It is not a de Polignac number, because 25824013 - 2¹⁷ = 25692941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25824017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12912006 + 12912007.

It is an arithmetic number, because the mean of its divisors is an integer number (12912007).

Almost surely, 2^25824013 is an apocalyptic number.

It is an amenable number.

25824013 is a deficient number, since it is larger than the sum of its proper divisors (1).

25824013 is an equidigital number, since it uses as much as digits as its factorization.

25824013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 25824013 is about 5081.7332673016. The cubic root of 25824013 is about 295.5796817689.

Adding to 25824013 its reverse (31042852), we get a palindrome (56866865).

The spelling of 25824013 in words is "twenty-five million, eight hundred twenty-four thousand, thirteen".