22529250 has 192 divisors, whose sum is σ = 70087680. Its totient is φ = 5184000.

The previous prime is 22529207. The next prime is 22529257. The reversal of 22529250 is 5292522.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22529257) 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 95 ways as a sum of consecutive naturals, for example, 726735 + ... + 726765.

It is an arithmetic number, because the mean of its divisors is an integer number (365040).

Almost surely, 2^22529250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22529250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35043840).

22529250 is an abundant number, since it is smaller than the sum of its proper divisors (47558430).

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

22529250 is a wasteful number, since it uses less digits than its factorization.

22529250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 22529250 is about 4746.4987095753. The cubic root of 22529250 is about 282.4330903746.

It can be divided in two parts, 2 and 2529250, that added together give a palindrome (2529252).

The spelling of 22529250 in words is "twenty-two million, five hundred twenty-nine thousand, two hundred fifty".