22025144 has 8 divisors (see below), whose sum is σ = 41297160. Its totient is φ = 11012568.

The previous prime is 22025141. The next prime is 22025147. The reversal of 22025144 is 44152022.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22025141) and next prime (22025147).

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22025141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1376564 + ... + 1376579.

It is an arithmetic number, because the mean of its divisors is an integer number (5162145).

Almost surely, 2^22025144 is an apocalyptic number.

It is an amenable number.

22025144 is a deficient number, since it is larger than the sum of its proper divisors (19272016).

22025144 is a wasteful number, since it uses less digits than its factorization.

22025144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2753149 (or 2753145 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 22025144 is about 4693.0953538150. The cubic root of 22025144 is about 280.3106416306.

Adding to 22025144 its reverse (44152022), we get a palindrome (66177166).

The spelling of 22025144 in words is "twenty-two million, twenty-five thousand, one hundred forty-four".