25661341 has 2 divisors, whose sum is σ = 25661342. Its totient is φ = 25661340.

The previous prime is 25661327. The next prime is 25661351. The reversal of 25661341 is 14316652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20666116 + 4995225 = 4546^2 + 2235^2 .

It is a cyclic number.

It is not a de Polignac number, because 25661341 - 2⁹ = 25660829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25661351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12830670 + 12830671.

It is an arithmetic number, because the mean of its divisors is an integer number (12830671).

Almost surely, 2^25661341 is an apocalyptic number.

It is an amenable number.

25661341 is a deficient number, since it is larger than the sum of its proper divisors (1).

25661341 is an equidigital number, since it uses as much as digits as its factorization.

25661341 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 28.

The square root of 25661341 is about 5065.7024192110. The cubic root of 25661341 is about 294.9577302262.

Adding to 25661341 its reverse (14316652), we get a palindrome (39977993).

The spelling of 25661341 in words is "twenty-five million, six hundred sixty-one thousand, three hundred forty-one".