25313543 has 4 divisors (see below), whose sum is σ = 25337208. Its totient is φ = 25289880.

The previous prime is 25313539. The next prime is 25313551. The reversal of 25313543 is 34531352.

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 25313543 - 2² = 25313539 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 (25313503) 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, 10148 + ... + 12393.

It is an arithmetic number, because the mean of its divisors is an integer number (6334302).

Almost surely, 2^25313543 is an apocalyptic number.

25313543 is a deficient number, since it is larger than the sum of its proper divisors (23665).

25313543 is a wasteful number, since it uses less digits than its factorization.

25313543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23664.

The product of its digits is 5400, while the sum is 26.

The square root of 25313543 is about 5031.2566024801. The cubic root of 25313543 is about 293.6191058293.

Adding to 25313543 its reverse (34531352), we get a palindrome (59844895).

The spelling of 25313543 in words is "twenty-five million, three hundred thirteen thousand, five hundred forty-three".