25444243 has 6 divisors (see below), whose sum is σ = 27967772. Its totient is φ = 23131020.

The previous prime is 25444219. The next prime is 25444253. The reversal of 25444243 is 34244452.

It is not a de Polignac number, because 25444243 - 2⁹ = 25443731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25444213) 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 5 ways as a sum of consecutive naturals, for example, 105021 + ... + 105262.

Almost surely, 2^25444243 is an apocalyptic number.

25444243 is a deficient number, since it is larger than the sum of its proper divisors (2523529).

25444243 is a wasteful number, since it uses less digits than its factorization.

25444243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210305 (or 210294 counting only the distinct ones).

The product of its digits is 15360, while the sum is 28.

The square root of 25444243 is about 5044.2286823656. The cubic root of 25444243 is about 294.1235809462.

Adding to 25444243 its reverse (34244452), we get a palindrome (59688695).

The spelling of 25444243 in words is "twenty-five million, four hundred forty-four thousand, two hundred forty-three".