25563242 has 8 divisors (see below), whose sum is σ = 39236736. Its totient is φ = 12484332.

The previous prime is 25563233. The next prime is 25563259. The reversal of 25563242 is 24236552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148538 + ... + 148709.

It is an arithmetic number, because the mean of its divisors is an integer number (4904592).

Almost surely, 2^25563242 is an apocalyptic number.

25563242 is a deficient number, since it is larger than the sum of its proper divisors (13673494).

25563242 is a wasteful number, since it uses less digits than its factorization.

25563242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297292.

The product of its digits is 14400, while the sum is 29.

The square root of 25563242 is about 5056.0104825841. The cubic root of 25563242 is about 294.5813922921.

Adding to 25563242 its reverse (24236552), we get a palindrome (49799794).

The spelling of 25563242 in words is "twenty-five million, five hundred sixty-three thousand, two hundred forty-two".