25609442 has 8 divisors (see below), whose sum is σ = 40084416. Its totient is φ = 12247972.

The previous prime is 25609433. The next prime is 25609457. The reversal of 25609442 is 24490652.

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 = 25609399 and 25609408.

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, 278318 + ... + 278409.

It is an arithmetic number, because the mean of its divisors is an integer number (5010552).

Almost surely, 2^25609442 is an apocalyptic number.

25609442 is a deficient number, since it is larger than the sum of its proper divisors (14474974).

25609442 is a wasteful number, since it uses less digits than its factorization.

25609442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556752.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 25609442 is about 5060.5772398018. The cubic root of 25609442 is about 294.7587494222.

The spelling of 25609442 in words is "twenty-five million, six hundred nine thousand, four hundred forty-two".