25244542 has 4 divisors (see below), whose sum is σ = 37866816. Its totient is φ = 12622270.

The previous prime is 25244537. The next prime is 25244551. The reversal of 25244542 is 24544252.

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

It is a self number, because there is not a number n which added to its sum of digits gives 25244542.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 6311134 + ... + 6311137.

It is an arithmetic number, because the mean of its divisors is an integer number (9466704).

Almost surely, 2^25244542 is an apocalyptic number.

25244542 is a deficient number, since it is larger than the sum of its proper divisors (12622274).

25244542 is a wasteful number, since it uses less digits than its factorization.

25244542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12622273.

The product of its digits is 12800, while the sum is 28.

The square root of 25244542 is about 5024.3946899104. The cubic root of 25244542 is about 293.3520755357.

Adding to 25244542 its reverse (24544252), we get a palindrome (49788794).

The spelling of 25244542 in words is "twenty-five million, two hundred forty-four thousand, five hundred forty-two".