25518341 has 2 divisors, whose sum is σ = 25518342. Its totient is φ = 25518340.

The previous prime is 25518331. The next prime is 25518371. The reversal of 25518341 is 14381552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18887716 + 6630625 = 4346^2 + 2575^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25518341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25518331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12759170 + 12759171.

It is an arithmetic number, because the mean of its divisors is an integer number (12759171).

Almost surely, 2^25518341 is an apocalyptic number.

It is an amenable number.

25518341 is a deficient number, since it is larger than the sum of its proper divisors (1).

25518341 is an equidigital number, since it uses as much as digits as its factorization.

25518341 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4800, while the sum is 29.

The square root of 25518341 is about 5051.5681723599. The cubic root of 25518341 is about 294.4088170123.

Adding to 25518341 its reverse (14381552), we get a palindrome (39899893).

The spelling of 25518341 in words is "twenty-five million, five hundred eighteen thousand, three hundred forty-one".