25465543 has 2 divisors, whose sum is σ = 25465544. Its totient is φ = 25465542.

The previous prime is 25465537. The next prime is 25465547. The reversal of 25465543 is 34556452.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25465543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25465499 and 25465508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25465547) 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, 12732771 + 12732772.

It is an arithmetic number, because the mean of its divisors is an integer number (12732772).

Almost surely, 2^25465543 is an apocalyptic number.

25465543 is a deficient number, since it is larger than the sum of its proper divisors (1).

25465543 is an equidigital number, since it uses as much as digits as its factorization.

25465543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72000, while the sum is 34.

The square root of 25465543 is about 5046.3395644764. The cubic root of 25465543 is about 294.2056307434.

Subtracting 25465543 from its reverse (34556452), we obtain a palindrome (9090909).

The spelling of 25465543 in words is "twenty-five million, four hundred sixty-five thousand, five hundred forty-three".