22194725 has 12 divisors (see below), whose sum is σ = 31453344. Its totient is φ = 15219120.

The previous prime is 22194721. The next prime is 22194727. The reversal of 22194725 is 52749122.

It is not a de Polignac number, because 22194725 - 2² = 22194721 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22194691 and 22194700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22194721) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 63239 + ... + 63588.

It is an arithmetic number, because the mean of its divisors is an integer number (2621112).

Almost surely, 2^22194725 is an apocalyptic number.

22194725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22194725 is a deficient number, since it is larger than the sum of its proper divisors (9258619).

22194725 is a wasteful number, since it uses less digits than its factorization.

22194725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126844 (or 126839 counting only the distinct ones).

The product of its digits is 10080, while the sum is 32.

The square root of 22194725 is about 4711.1277842996. The cubic root of 22194725 is about 281.0282136284.

The spelling of 22194725 in words is "twenty-two million, one hundred ninety-four thousand, seven hundred twenty-five".