25419839 has 2 divisors, whose sum is σ = 25419840. Its totient is φ = 25419838.

The previous prime is 25419833. The next prime is 25419857. The reversal of 25419839 is 93891452.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25419839 - 2¹² = 25415743 is a prime.

It is a Chen prime.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 25419796 and 25419805.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25419833) 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 as a sum of consecutive naturals, namely, 12709919 + 12709920.

It is an arithmetic number, because the mean of its divisors is an integer number (12709920).

Almost surely, 2^25419839 is an apocalyptic number.

25419839 is a deficient number, since it is larger than the sum of its proper divisors (1).

25419839 is an equidigital number, since it uses as much as digits as its factorization.

25419839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 41.

The square root of 25419839 is about 5041.8090999164. The cubic root of 25419839 is about 294.0295179149.

The spelling of 25419839 in words is "twenty-five million, four hundred nineteen thousand, eight hundred thirty-nine".