22222025 has 24 divisors (see below), whose sum is σ = 32866944. Its totient is φ = 14572800.

The previous prime is 22221977. The next prime is 22222049. The reversal of 22222025 is 52022222.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-22222025 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22221994 and 22222012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1265 + ... + 6785.

It is an arithmetic number, because the mean of its divisors is an integer number (1369456).

Almost surely, 2^22222025 is an apocalyptic number.

22222025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22222025 is a deficient number, since it is larger than the sum of its proper divisors (10644919).

22222025 is a wasteful number, since it uses less digits than its factorization.

22222025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5561 (or 5556 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 22222025 is about 4714.0242892883. The cubic root of 22222025 is about 281.1433900465.

Adding to 22222025 its reverse (52022222), we get a palindrome (74244247).

The spelling of 22222025 in words is "twenty-two million, two hundred twenty-two thousand, twenty-five".