22212825 has 48 divisors (see below), whose sum is σ = 39045120. Its totient is φ = 11119680.

The previous prime is 22212823. The next prime is 22212859. The reversal of 22212825 is 52821222.

It is not a de Polignac number, because 22212825 - 2¹ = 22212823 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22212795 and 22212804.

It is not an unprimeable number, because it can be changed into a prime (22212821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 136194 + ... + 136356.

It is an arithmetic number, because the mean of its divisors is an integer number (813440).

Almost surely, 2^22212825 is an apocalyptic number.

22212825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22212825 is a deficient number, since it is larger than the sum of its proper divisors (16832295).

22212825 is a wasteful number, since it uses less digits than its factorization.

22212825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278 (or 273 counting only the distinct ones).

The product of its digits is 1280, while the sum is 24.

The square root of 22212825 is about 4713.0483765818. The cubic root of 22212825 is about 281.1045865589.

The spelling of 22212825 in words is "twenty-two million, two hundred twelve thousand, eight hundred twenty-five".