4125222 has 32 divisors (see below), whose sum is σ = 9292800. Its totient is φ = 1356264.

The previous prime is 4125181. The next prime is 4125229. The reversal of 4125222 is 2225214.

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

It is a junction number, because it is equal to n+sod(n) for n = 4125195 and 4125204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4125229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3783 + ... + 4749.

It is an arithmetic number, because the mean of its divisors is an integer number (290400).

Almost surely, 2^4125222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4125222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4646400).

4125222 is an abundant number, since it is smaller than the sum of its proper divisors (5167578).

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

4125222 is a wasteful number, since it uses less digits than its factorization.

4125222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1057 (or 1051 counting only the distinct ones).

The product of its digits is 320, while the sum is 18.

The square root of 4125222 is about 2031.0642530457. The cubic root of 4125222 is about 160.3795935093.

The spelling of 4125222 in words is "four million, one hundred twenty-five thousand, two hundred twenty-two".