25222 has 4 divisors (see below), whose sum is σ = 37836. Its totient is φ = 12610.

The previous prime is 25219. The next prime is 25229. The reversal of 25222 is 22252.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×25222² = 1272298568, which contains 22 as substring.

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6304 + ... + 6307.

It is an arithmetic number, because the mean of its divisors is an integer number (9459).

2²⁵²²² is an apocalyptic number.

25222 is a deficient number, since it is larger than the sum of its proper divisors (12614).

25222 is a wasteful number, since it uses less digits than its factorization.

25222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12613.

The product of its digits is 80, while the sum is 13.

The square root of 25222 is about 158.8143570336. The cubic root of 25222 is about 29.3264733729.

Adding to 25222 its reverse (22252), we get a palindrome (47474).

The spelling of 25222 in words is "twenty-five thousand, two hundred twenty-two".