25861442 has 8 divisors (see below), whose sum is σ = 39228300. Its totient is φ = 12785344.

The previous prime is 25861441. The next prime is 25861477. The reversal of 25861442 is 24416852.

It can be written as a sum of positive squares in 2 ways, for example, as 20529961 + 5331481 = 4531^2 + 2309^2 .

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 = 25861399 and 25861408.

It is not an unprimeable number, because it can be changed into a prime (25861441) by changing a digit.

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, 72467 + ... + 72822.

Almost surely, 2^25861442 is an apocalyptic number.

25861442 is a deficient number, since it is larger than the sum of its proper divisors (13366858).

25861442 is a wasteful number, since it uses less digits than its factorization.

25861442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145380.

The product of its digits is 15360, while the sum is 32.

The square root of 25861442 is about 5085.4146340294. The cubic root of 25861442 is about 295.7224159911.

The spelling of 25861442 in words is "twenty-five million, eight hundred sixty-one thousand, four hundred forty-two".