25554222 has 12 divisors (see below), whose sum is σ = 55367520. Its totient is φ = 8518068.

The previous prime is 25554203. The next prime is 25554223. The reversal of 25554222 is 22245552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25554223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 709822 + ... + 709857.

It is an arithmetic number, because the mean of its divisors is an integer number (4613960).

Almost surely, 2^25554222 is an apocalyptic number.

25554222 is an abundant number, since it is smaller than the sum of its proper divisors (29813298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25554222 is a wasteful number, since it uses less digits than its factorization.

25554222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1419687 (or 1419684 counting only the distinct ones).

The product of its digits is 8000, while the sum is 27.

The square root of 25554222 is about 5055.1183962396. The cubic root of 25554222 is about 294.5467404961.

Adding to 25554222 its reverse (22245552), we get a palindrome (47799774).

The spelling of 25554222 in words is "twenty-five million, five hundred fifty-four thousand, two hundred twenty-two".