22125700 has 36 divisors (see below), whose sum is σ = 48529012. Its totient is φ = 8755200.

The previous prime is 22125689. The next prime is 22125703. The reversal of 22125700 is 752122.

It can be written as a sum of positive squares in 6 ways, for example, as 298116 + 21827584 = 546^2 + 4672^2 .

It is not an unprimeable number, because it can be changed into a prime (22125703) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8560 + ... + 10840.

Almost surely, 2^22125700 is an apocalyptic number.

22125700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22125700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24264506).

22125700 is an abundant number, since it is smaller than the sum of its proper divisors (26403312).

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

22125700 is a wasteful number, since it uses less digits than its factorization.

22125700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2392 (or 2385 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 22125700 is about 4703.7963391286. The cubic root of 22125700 is about 280.7365810247.

Adding to 22125700 its reverse (752122), we get a palindrome (22877822).

It can be divided in two parts, 221 and 25700, that added together give a square (25921 = 161²).

The spelling of 22125700 in words is "twenty-two million, one hundred twenty-five thousand, seven hundred".