25983647 has 2 divisors, whose sum is σ = 25983648. Its totient is φ = 25983646.

The previous prime is 25983641. The next prime is 25983677. The reversal of 25983647 is 74638952.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25983647 - 2⁴ = 25983631 is a prime.

It is a super-2 number, since 2×25983647² = 1350299822841218, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 25983598 and 25983607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25983641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12991823 + 12991824.

It is an arithmetic number, because the mean of its divisors is an integer number (12991824).

Almost surely, 2^25983647 is an apocalyptic number.

25983647 is a deficient number, since it is larger than the sum of its proper divisors (1).

25983647 is an equidigital number, since it uses as much as digits as its factorization.

25983647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 44.

The square root of 25983647 is about 5097.4157177927. The cubic root of 25983647 is about 296.1874839451.

The spelling of 25983647 in words is "twenty-five million, nine hundred eighty-three thousand, six hundred forty-seven".