25444242 has 24 divisors (see below), whose sum is σ = 56908800. Its totient is φ = 8207640.

The previous prime is 25444219. The next prime is 25444253. The reversal of 25444242 is 24244452.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22242 + ... + 23357.

It is an arithmetic number, because the mean of its divisors is an integer number (2371200).

Almost surely, 2^25444242 is an apocalyptic number.

25444242 is an abundant number, since it is smaller than the sum of its proper divisors (31464558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25444242 is a wasteful number, since it uses less digits than its factorization.

25444242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45638 (or 45635 counting only the distinct ones).

The product of its digits is 10240, while the sum is 27.

The square root of 25444242 is about 5044.2285832424. The cubic root of 25444242 is about 294.1235770930.

Adding to 25444242 its reverse (24244452), we get a palindrome (49688694).

It can be divided in two parts, 2544 and 4242, that added together give a triangular number (6786 = T₁₁₆).

The spelling of 25444242 in words is "twenty-five million, four hundred forty-four thousand, two hundred forty-two".