22011925 has 24 divisors (see below), whose sum is σ = 29763720. Its totient is φ = 16051200.

The previous prime is 22011893. The next prime is 22011931. The reversal of 22011925 is 52911022.

It can be written as a sum of positive squares in 12 ways, for example, as 19989841 + 2022084 = 4471^2 + 1422^2 .

It is not a de Polignac number, because 22011925 - 2⁵ = 22011893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22011896 and 22011905.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28545 + ... + 29305.

It is an arithmetic number, because the mean of its divisors is an integer number (1240155).

Almost surely, 2^22011925 is an apocalyptic number.

22011925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22011925 is a deficient number, since it is larger than the sum of its proper divisors (7751795).

22011925 is a wasteful number, since it uses less digits than its factorization.

22011925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873 (or 868 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 22011925 is about 4691.6867968781. The cubic root of 22011925 is about 280.2545516769.

Adding to 22011925 its reverse (52911022), we get a palindrome (74922947).

The spelling of 22011925 in words is "twenty-two million, eleven thousand, nine hundred twenty-five".