25863842 has 4 divisors (see below), whose sum is σ = 38795766. Its totient is φ = 12931920.

The previous prime is 25863839. The next prime is 25863857. The reversal of 25863842 is 24836852.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 24492601 + 1371241 = 4949^2 + 1171^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25863796 and 25863805.

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 as a sum of consecutive naturals, namely, 6465959 + ... + 6465962.

Almost surely, 2^25863842 is an apocalyptic number.

25863842 is a deficient number, since it is larger than the sum of its proper divisors (12931924).

25863842 is a wasteful number, since it uses less digits than its factorization.

25863842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12931923.

The product of its digits is 92160, while the sum is 38.

The square root of 25863842 is about 5085.6505975145. The cubic root of 25863842 is about 295.7315636100.

The spelling of 25863842 in words is "twenty-five million, eight hundred sixty-three thousand, eight hundred forty-two".