25453543 has 4 divisors (see below), whose sum is σ = 25482160. Its totient is φ = 25424928.

The previous prime is 25453523. The next prime is 25453553. The reversal of 25453543 is 34535452.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25453543 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25453513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12930 + ... + 14767.

It is an arithmetic number, because the mean of its divisors is an integer number (6370540).

Almost surely, 2^25453543 is an apocalyptic number.

25453543 is a deficient number, since it is larger than the sum of its proper divisors (28617).

25453543 is an equidigital number, since it uses as much as digits as its factorization.

25453543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28616.

The product of its digits is 36000, while the sum is 31.

The square root of 25453543 is about 5045.1504437430. The cubic root of 25453543 is about 294.1594111352.

Adding to 25453543 its reverse (34535452), we get a palindrome (59988995).

It can be divided in two parts, 2 and 5453543, that added together give a palindrome (5453545).

The spelling of 25453543 in words is "twenty-five million, four hundred fifty-three thousand, five hundred forty-three".