25861422 has 8 divisors (see below), whose sum is σ = 51722856. Its totient is φ = 8620472.

The previous prime is 25861399. The next prime is 25861427. The reversal of 25861422 is 22416852.

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

25861422 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 25861422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25861427) 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, 2155113 + ... + 2155124.

It is an arithmetic number, because the mean of its divisors is an integer number (6465357).

Almost surely, 2^25861422 is an apocalyptic number.

25861422 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.

25861422 is a wasteful number, since it uses less digits than its factorization.

25861422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4310242.

The product of its digits is 7680, while the sum is 30.

The square root of 25861422 is about 5085.4126676210. The cubic root of 25861422 is about 295.7223397586.

The spelling of 25861422 in words is "twenty-five million, eight hundred sixty-one thousand, four hundred twenty-two".