25916419 has 2 divisors, whose sum is σ = 25916420. Its totient is φ = 25916418.

The previous prime is 25916393. The next prime is 25916447. The reversal of 25916419 is 91461952.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25916419 - 2²¹ = 23819267 is a prime.

It is a super-2 number, since 2×25916419² = 1343321547567122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25916479) 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, 12958209 + 12958210.

It is an arithmetic number, because the mean of its divisors is an integer number (12958210).

Almost surely, 2^25916419 is an apocalyptic number.

25916419 is a deficient number, since it is larger than the sum of its proper divisors (1).

25916419 is an equidigital number, since it uses as much as digits as its factorization.

25916419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440, while the sum is 37.

The square root of 25916419 is about 5090.8171249810. The cubic root of 25916419 is about 295.9318194256.

It can be divided in two parts, 25916 and 419, that added together give a triangular number (26335 = T₂₂₉).

The spelling of 25916419 in words is "twenty-five million, nine hundred sixteen thousand, four hundred nineteen".