25244242 has 4 divisors (see below), whose sum is σ = 37866366. Its totient is φ = 12622120.

The previous prime is 25244237. The next prime is 25244257. The reversal of 25244242 is 24244252.

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

It can be written as a sum of positive squares in only one way, i.e., 20711601 + 4532641 = 4551^2 + 2129^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6311059 + ... + 6311062.

Almost surely, 2^25244242 is an apocalyptic number.

25244242 is a deficient number, since it is larger than the sum of its proper divisors (12622124).

25244242 is a wasteful number, since it uses less digits than its factorization.

25244242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12622123.

The product of its digits is 5120, while the sum is 25.

The square root of 25244242 is about 5024.3648354792. The cubic root of 25244242 is about 293.3509134895.

Adding to 25244242 its reverse (24244252), we get a palindrome (49488494).

The spelling of 25244242 in words is "twenty-five million, two hundred forty-four thousand, two hundred forty-two".