25502222 has 8 divisors (see below), whose sum is σ = 38975256. Its totient is φ = 12510472.

The previous prime is 25502221. The next prime is 25502231. The reversal of 25502222 is 22220552.

It is a happy number.

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 = 25502194 and 25502203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25502221) 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, 120188 + ... + 120399.

It is an arithmetic number, because the mean of its divisors is an integer number (4871907).

Almost surely, 2^25502222 is an apocalyptic number.

25502222 is a deficient number, since it is larger than the sum of its proper divisors (13473034).

25502222 is a wasteful number, since it uses less digits than its factorization.

25502222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240642.

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 25502222 is about 5049.9724751725. The cubic root of 25502222 is about 294.3468148720.

Adding to 25502222 its reverse (22220552), we get a palindrome (47722774).

The spelling of 25502222 in words is "twenty-five million, five hundred two thousand, two hundred twenty-two".