25995642 has 8 divisors (see below), whose sum is σ = 51991296. Its totient is φ = 8665212.

The previous prime is 25995637. The next prime is 25995643. The reversal of 25995642 is 24659952.

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

25995642 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 25995594 and 25995603.

It is not an unprimeable number, because it can be changed into a prime (25995643) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 2166298 + ... + 2166309.

It is an arithmetic number, because the mean of its divisors is an integer number (6498912).

Almost surely, 2^25995642 is an apocalyptic number.

25995642 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

25995642 is a wasteful number, since it uses less digits than its factorization.

25995642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4332612.

The product of its digits is 194400, while the sum is 42.

The square root of 25995642 is about 5098.5921586258. The cubic root of 25995642 is about 296.2330539186.

The spelling of 25995642 in words is "twenty-five million, nine hundred ninety-five thousand, six hundred forty-two".