25824641 has 2 divisors, whose sum is σ = 25824642. Its totient is φ = 25824640.

The previous prime is 25824619. The next prime is 25824661. The reversal of 25824641 is 14642852.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17673616 + 8151025 = 4204^2 + 2855^2 .

It is a cyclic number.

It is not a de Polignac number, because 25824641 - 2⁶ = 25824577 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25824598 and 25824607.

It is not a weakly prime, because it can be changed into another prime (25824611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12912320 + 12912321.

It is an arithmetic number, because the mean of its divisors is an integer number (12912321).

Almost surely, 2^25824641 is an apocalyptic number.

It is an amenable number.

25824641 is a deficient number, since it is larger than the sum of its proper divisors (1).

25824641 is an equidigital number, since it uses as much as digits as its factorization.

25824641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15360, while the sum is 32.

The square root of 25824641 is about 5081.7950568672. The cubic root of 25824641 is about 295.5820777628.

The spelling of 25824641 in words is "twenty-five million, eight hundred twenty-four thousand, six hundred forty-one".