25112543 has 4 divisors (see below), whose sum is σ = 25203480. Its totient is φ = 25021608.

The previous prime is 25112501. The next prime is 25112551. The reversal of 25112543 is 34521152.

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

It is a cyclic number.

It is not a de Polignac number, because 25112543 - 2⁸ = 25112287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25112443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45053 + ... + 45606.

It is an arithmetic number, because the mean of its divisors is an integer number (6300870).

Almost surely, 2^25112543 is an apocalyptic number.

25112543 is a deficient number, since it is larger than the sum of its proper divisors (90937).

25112543 is an equidigital number, since it uses as much as digits as its factorization.

25112543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90936.

The product of its digits is 1200, while the sum is 23.

The square root of 25112543 is about 5011.2416625024. The cubic root of 25112543 is about 292.8398873604.

Adding to 25112543 its reverse (34521152), we get a palindrome (59633695).

The spelling of 25112543 in words is "twenty-five million, one hundred twelve thousand, five hundred forty-three".