25605222 has 8 divisors (see below), whose sum is σ = 51210456. Its totient is φ = 8535072.

The previous prime is 25605199. The next prime is 25605241. The reversal of 25605222 is 22250652.

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

25605222 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 25605192 and 25605201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2133763 + ... + 2133774.

It is an arithmetic number, because the mean of its divisors is an integer number (6401307).

Almost surely, 2^25605222 is an apocalyptic number.

25605222 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.

25605222 is a wasteful number, since it uses less digits than its factorization.

25605222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4267542.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 25605222 is about 5060.1602741415. The cubic root of 25605222 is about 294.7425581251.

Adding to 25605222 its reverse (22250652), we get a palindrome (47855874).

The spelling of 25605222 in words is "twenty-five million, six hundred five thousand, two hundred twenty-two".