25555422 has 8 divisors (see below), whose sum is σ = 51110856. Its totient is φ = 8518472.

The previous prime is 25555393. The next prime is 25555427. The reversal of 25555422 is 22455552.

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

25555422 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 25555422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25555427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2129613 + ... + 2129624.

It is an arithmetic number, because the mean of its divisors is an integer number (6388857).

Almost surely, 2^25555422 is an apocalyptic number.

25555422 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.

25555422 is a wasteful number, since it uses less digits than its factorization.

25555422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4259242.

The product of its digits is 20000, while the sum is 30.

The square root of 25555422 is about 5055.2370864283. The cubic root of 25555422 is about 294.5513509613.

The spelling of 25555422 in words is "twenty-five million, five hundred fifty-five thousand, four hundred twenty-two".