25984019 has 2 divisors, whose sum is σ = 25984020. Its totient is φ = 25984018.

The previous prime is 25984003. The next prime is 25984051. The reversal of 25984019 is 91048952.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25984019 - 2⁴ = 25984003 is a prime.

It is a super-2 number, since 2×25984019² = 1350338486784722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25984099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12992009 + 12992010.

It is an arithmetic number, because the mean of its divisors is an integer number (12992010).

Almost surely, 2^25984019 is an apocalyptic number.

25984019 is a deficient number, since it is larger than the sum of its proper divisors (1).

25984019 is an equidigital number, since it uses as much as digits as its factorization.

25984019 is an evil number, because the sum of its binary digits is even.

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

The square root of 25984019 is about 5097.4522067401. The cubic root of 25984019 is about 296.1888974139.

The spelling of 25984019 in words is "twenty-five million, nine hundred eighty-four thousand, nineteen".