25452543 has 4 divisors (see below), whose sum is σ = 33936728. Its totient is φ = 16968360.

The previous prime is 25452527. The next prime is 25452569. The reversal of 25452543 is 34525452.

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

It is not a de Polignac number, because 25452543 - 2⁴ = 25452527 is a prime.

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

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25452543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25452593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4242088 + ... + 4242093.

It is an arithmetic number, because the mean of its divisors is an integer number (8484182).

Almost surely, 2^25452543 is an apocalyptic number.

25452543 is a deficient number, since it is larger than the sum of its proper divisors (8484185).

25452543 is an equidigital number, since it uses as much as digits as its factorization.

25452543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8484184.

The product of its digits is 24000, while the sum is 30.

The square root of 25452543 is about 5045.0513376972. The cubic root of 25452543 is about 294.1555588455.

Adding to 25452543 its reverse (34525452), we get a palindrome (59977995).

It can be divided in two parts, 2 and 5452543, that added together give a palindrome (5452545).

The spelling of 25452543 in words is "twenty-five million, four hundred fifty-two thousand, five hundred forty-three".