25430543 has 2 divisors, whose sum is σ = 25430544. Its totient is φ = 25430542.

The previous prime is 25430519. The next prime is 25430549. The reversal of 25430543 is 34503452.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25430543 - 2¹⁴ = 25414159 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25430549) 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, 12715271 + 12715272.

It is an arithmetic number, because the mean of its divisors is an integer number (12715272).

Almost surely, 2^25430543 is an apocalyptic number.

25430543 is a deficient number, since it is larger than the sum of its proper divisors (1).

25430543 is an equidigital number, since it uses as much as digits as its factorization.

25430543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 26.

The square root of 25430543 is about 5042.8705119208. The cubic root of 25430543 is about 294.0707829324.

Adding to 25430543 its reverse (34503452), we get a palindrome (59933995).

The spelling of 25430543 in words is "twenty-five million, four hundred thirty thousand, five hundred forty-three".