22601250 has 180 divisors, whose sum is σ = 72918846. Its totient is φ = 5040000.

The previous prime is 22601231. The next prime is 22601251. The reversal of 22601250 is 5210622.

It can be written as a sum of positive squares in 5 ways, for example, as 670761 + 21930489 = 819^2 + 4683^2 .

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

It is not an unprimeable number, because it can be changed into a prime (22601251) by changing a digit.

It is a polite number, since it can be written in 89 ways as a sum of consecutive naturals, for example, 551230 + ... + 551270.

Almost surely, 2^22601250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22601250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36459423).

22601250 is an abundant number, since it is smaller than the sum of its proper divisors (50317596).

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

22601250 is a wasteful number, since it uses less digits than its factorization.

22601250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83 (or 58 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 22601250 is about 4754.0771975221. The cubic root of 22601250 is about 282.7336412612.

Adding to 22601250 its reverse (5210622), we get a palindrome (27811872).

The spelling of 22601250 in words is "twenty-two million, six hundred one thousand, two hundred fifty".