22502250 has 96 divisors (see below), whose sum is σ = 62129808. Its totient is φ = 5875200.

The previous prime is 22502239. The next prime is 22502273. The reversal of 22502250 is 5220522.

It can be written as a sum of positive squares in 8 ways, for example, as 1461681 + 21040569 = 1209^2 + 4587^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 164182 + ... + 164318.

Almost surely, 2^22502250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22502250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31064904).

22502250 is an abundant number, since it is smaller than the sum of its proper divisors (39627558).

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

22502250 is a wasteful number, since it uses less digits than its factorization.

22502250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233 (or 220 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 22502250 is about 4743.6536551481. The cubic root of 22502250 is about 282.3202187109.

Adding to 22502250 its reverse (5220522), we get a palindrome (27722772).

The spelling of 22502250 in words is "twenty-two million, five hundred two thousand, two hundred fifty".