25616442 has 16 divisors (see below), whose sum is σ = 51712992. Its totient is φ = 8458800.

The previous prime is 25616419. The next prime is 25616471. The reversal of 25616442 is 24461652.

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 7 ways as a sum of consecutive naturals, for example, 19309 + ... + 20592.

It is an arithmetic number, because the mean of its divisors is an integer number (3232062).

Almost surely, 2^25616442 is an apocalyptic number.

25616442 is an abundant number, since it is smaller than the sum of its proper divisors (26096550).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25616442 is a wasteful number, since it uses less digits than its factorization.

25616442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40013.

The product of its digits is 11520, while the sum is 30.

The square root of 25616442 is about 5061.2688132523. The cubic root of 25616442 is about 294.7856031022.

The spelling of 25616442 in words is "twenty-five million, six hundred sixteen thousand, four hundred forty-two".