25619413 has 2 divisors, whose sum is σ = 25619414. Its totient is φ = 25619412.

The previous prime is 25619389. The next prime is 25619431. The reversal of 25619413 is 31491652.

Together with next prime (25619431) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22259524 + 3359889 = 4718^2 + 1833^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25619413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25619483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12809706 + 12809707.

It is an arithmetic number, because the mean of its divisors is an integer number (12809707).

Almost surely, 2^25619413 is an apocalyptic number.

It is an amenable number.

25619413 is a deficient number, since it is larger than the sum of its proper divisors (1).

25619413 is an equidigital number, since it uses as much as digits as its factorization.

25619413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 31.

The square root of 25619413 is about 5061.5623082207. The cubic root of 25619413 is about 294.7969990925.

The spelling of 25619413 in words is "twenty-five million, six hundred nineteen thousand, four hundred thirteen".