25980419 has 2 divisors, whose sum is σ = 25980420. Its totient is φ = 25980418.

The previous prime is 25980397. The next prime is 25980421. The reversal of 25980419 is 91408952.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25980419 is a prime.

It is a super-2 number, since 2×25980419² = 1349964342831122, which contains 22 as substring.

Together with 25980421, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25980439) 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 as a sum of consecutive naturals, namely, 12990209 + 12990210.

It is an arithmetic number, because the mean of its divisors is an integer number (12990210).

Almost surely, 2^25980419 is an apocalyptic number.

25980419 is a deficient number, since it is larger than the sum of its proper divisors (1).

25980419 is an equidigital number, since it uses as much as digits as its factorization.

25980419 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 25980419 is about 5097.0990769260. The cubic root of 25980419 is about 296.1752181176.

The spelling of 25980419 in words is "twenty-five million, nine hundred eighty thousand, four hundred nineteen".