25665041 has 2 divisors, whose sum is σ = 25665042. Its totient is φ = 25665040.

The previous prime is 25664983. The next prime is 25665043. The reversal of 25665041 is 14056652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25654225 + 10816 = 5065^2 + 104^2 .

It is a cyclic number.

It is not a de Polignac number, because 25665041 - 2¹⁰ = 25664017 is a prime.

Together with 25665043, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 25664995 and 25665013.

It is not a weakly prime, because it can be changed into another prime (25665043) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12832520 + 12832521.

It is an arithmetic number, because the mean of its divisors is an integer number (12832521).

Almost surely, 2^25665041 is an apocalyptic number.

It is an amenable number.

25665041 is a deficient number, since it is larger than the sum of its proper divisors (1).

25665041 is an equidigital number, since it uses as much as digits as its factorization.

25665041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 25665041 is about 5066.0676071288. The cubic root of 25665041 is about 294.9719057800.

The spelling of 25665041 in words is "twenty-five million, six hundred sixty-five thousand, forty-one".