25839641 has 2 divisors, whose sum is σ = 25839642. Its totient is φ = 25839640.

The previous prime is 25839623. The next prime is 25839659. The reversal of 25839641 is 14693852.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (25839623) and next prime (25839659).

It can be written as a sum of positive squares in only one way, i.e., 21855625 + 3984016 = 4675^2 + 1996^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25839641 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 25839595 and 25839604.

It is not a weakly prime, because it can be changed into another prime (25839691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12919820 + 12919821.

It is an arithmetic number, because the mean of its divisors is an integer number (12919821).

Almost surely, 2^25839641 is an apocalyptic number.

It is an amenable number.

25839641 is a deficient number, since it is larger than the sum of its proper divisors (1).

25839641 is an equidigital number, since it uses as much as digits as its factorization.

25839641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 38.

The square root of 25839641 is about 5083.2706990677. The cubic root of 25839641 is about 295.6392953767.

The spelling of 25839641 in words is "twenty-five million, eight hundred thirty-nine thousand, six hundred forty-one".