25481543 has 2 divisors, whose sum is σ = 25481544. Its totient is φ = 25481542.

The previous prime is 25481531. The next prime is 25481549. The reversal of 25481543 is 34518452.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25481543 - 2¹⁰ = 25480519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25481549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12740771 + 12740772.

It is an arithmetic number, because the mean of its divisors is an integer number (12740772).

Almost surely, 2^25481543 is an apocalyptic number.

25481543 is a deficient number, since it is larger than the sum of its proper divisors (1).

25481543 is an equidigital number, since it uses as much as digits as its factorization.

25481543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19200, while the sum is 32.

The square root of 25481543 is about 5047.9246230505. The cubic root of 25481543 is about 294.2672343067.

Adding to 25481543 its reverse (34518452), we get a palindrome (59999995).

The spelling of 25481543 in words is "twenty-five million, four hundred eighty-one thousand, five hundred forty-three".