25313443 has 4 divisors (see below), whose sum is σ = 25327240. Its totient is φ = 25299648.

The previous prime is 25313437. The next prime is 25313447. The reversal of 25313443 is 34431352.

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

It is a 6-Lehmer number, since φ(25313443) divides (25313443-1)⁶.

It is a cyclic number.

It is not a de Polignac number, because 25313443 - 2¹³ = 25305251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25313447) 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, 3630 + ... + 7987.

It is an arithmetic number, because the mean of its divisors is an integer number (6331810).

Almost surely, 2^25313443 is an apocalyptic number.

25313443 is a deficient number, since it is larger than the sum of its proper divisors (13797).

25313443 is a wasteful number, since it uses less digits than its factorization.

25313443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13796.

The product of its digits is 4320, while the sum is 25.

The square root of 25313443 is about 5031.2466645952. The cubic root of 25313443 is about 293.6187191858.

Adding to 25313443 its reverse (34431352), we get a palindrome (59744795).

The spelling of 25313443 in words is "twenty-five million, three hundred thirteen thousand, four hundred forty-three".