22550250 has 64 divisors (see below), whose sum is σ = 57013632. Its totient is φ = 5936000.

The previous prime is 22550249. The next prime is 22550251. The reversal of 22550250 is 5205522.

It is an interprime number because it is at equal distance from previous prime (22550249) and next prime (22550251).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22550251) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80110 + ... + 80390.

It is an arithmetic number, because the mean of its divisors is an integer number (890838).

Almost surely, 2^22550250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22550250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28506816).

22550250 is an abundant number, since it is smaller than the sum of its proper divisors (34463382).

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

22550250 is a wasteful number, since it uses less digits than its factorization.

22550250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408 (or 398 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 21.

The square root of 22550250 is about 4748.7103512427. The cubic root of 22550250 is about 282.5208171153.

Adding to 22550250 its reverse (5205522), we get a palindrome (27755772).

The spelling of 22550250 in words is "twenty-two million, five hundred fifty thousand, two hundred fifty".