22166925 has 48 divisors (see below), whose sum is σ = 40539072. Its totient is φ = 10598400.

The previous prime is 22166923. The next prime is 22166941. The reversal of 22166925 is 52966122.

It is not a de Polignac number, because 22166925 - 2¹ = 22166923 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22166923) 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, 79887 + ... + 80163.

It is an arithmetic number, because the mean of its divisors is an integer number (844564).

Almost surely, 2^22166925 is an apocalyptic number.

22166925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22166925 is a deficient number, since it is larger than the sum of its proper divisors (18372147).

22166925 is a wasteful number, since it uses less digits than its factorization.

22166925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398 (or 393 counting only the distinct ones).

The product of its digits is 12960, while the sum is 33.

The square root of 22166925 is about 4708.1763985645. The cubic root of 22166925 is about 280.9108306543.

The spelling of 22166925 in words is "twenty-two million, one hundred sixty-six thousand, nine hundred twenty-five".