22113725 has 12 divisors (see below), whose sum is σ = 27584916. Its totient is φ = 17585280.

The previous prime is 22113703. The next prime is 22113727. The reversal of 22113725 is 52731122.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 1301881 + 20811844 = 1141^2 + 4562^2 .

It is not a de Polignac number, because 22113725 - 2⁶ = 22113661 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22113725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22113727) 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, 1769 + ... + 6881.

It is an arithmetic number, because the mean of its divisors is an integer number (2298743).

Almost surely, 2^22113725 is an apocalyptic number.

22113725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22113725 is a deficient number, since it is larger than the sum of its proper divisors (5471191).

22113725 is a wasteful number, since it uses less digits than its factorization.

22113725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5296 (or 5291 counting only the distinct ones).

The product of its digits is 840, while the sum is 23.

The square root of 22113725 is about 4702.5232588473. The cubic root of 22113725 is about 280.6859245899.

Adding to 22113725 its reverse (52731122), we get a palindrome (74844847).

The spelling of 22113725 in words is "twenty-two million, one hundred thirteen thousand, seven hundred twenty-five".