25565542 has 8 divisors (see below), whose sum is σ = 38401632. Its totient is φ = 12765000.

The previous prime is 25565539. The next prime is 25565563. The reversal of 25565542 is 24556552.

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

It is a junction number, because it is equal to n+sod(n) for n = 25565498 and 25565507.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7009 + ... + 10012.

It is an arithmetic number, because the mean of its divisors is an integer number (4800204).

Almost surely, 2^25565542 is an apocalyptic number.

25565542 is a deficient number, since it is larger than the sum of its proper divisors (12836090).

25565542 is a wasteful number, since it uses less digits than its factorization.

25565542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17774.

The product of its digits is 60000, while the sum is 34.

The square root of 25565542 is about 5056.2379295282. The cubic root of 25565542 is about 294.5902268117.

The spelling of 25565542 in words is "twenty-five million, five hundred sixty-five thousand, five hundred forty-two".