22725234 has 96 divisors (see below), whose sum is σ = 59439744. Its totient is φ = 6140160.

The previous prime is 22725233. The next prime is 22725251. The reversal of 22725234 is 43252722.

Its product of digits (6720) is a multiple of the sum of its prime factors (192).

It is a junction number, because it is equal to n+sod(n) for n = 22725198 and 22725207.

It is not an unprimeable number, because it can be changed into a prime (22725233) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 273757 + ... + 273839.

It is an arithmetic number, because the mean of its divisors is an integer number (619164).

Almost surely, 2^22725234 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22725234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29719872).

22725234 is an abundant number, since it is smaller than the sum of its proper divisors (36714510).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22725234 is a wasteful number, since it uses less digits than its factorization.

22725234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192 (or 189 counting only the distinct ones).

The product of its digits is 6720, while the sum is 27.

The square root of 22725234 is about 4767.0991179123. The cubic root of 22725234 is about 283.2496974212.

Adding to 22725234 its reverse (43252722), we get a palindrome (65977956).

The spelling of 22725234 in words is "twenty-two million, seven hundred twenty-five thousand, two hundred thirty-four".