22525222 has 16 divisors (see below), whose sum is σ = 35924400. Its totient is φ = 10562400.

The previous prime is 22525219. The next prime is 22525229. The reversal of 22525222 is 22252522.

It is a super-2 number, since 2×22525222² = 1014771252298568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22525193 and 22525202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22525229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 904 + ... + 6772.

It is an arithmetic number, because the mean of its divisors is an integer number (2245275).

Almost surely, 2^22525222 is an apocalyptic number.

22525222 is a deficient number, since it is larger than the sum of its proper divisors (13399178).

22525222 is a wasteful number, since it uses less digits than its factorization.

22525222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5991.

The product of its digits is 1600, while the sum is 22.

The square root of 22525222 is about 4746.0743778411. The cubic root of 22525222 is about 282.4162573199.

Adding to 22525222 its reverse (22252522), we get a palindrome (44777744).

The spelling of 22525222 in words is "twenty-two million, five hundred twenty-five thousand, two hundred twenty-two".