220125406 has 8 divisors (see below), whose sum is σ = 330420024. Its totient is φ = 109985400.

The previous prime is 220125403. The next prime is 220125407. The reversal of 220125406 is 604521022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-4 number, since 4×220125406⁴ (a number of 34 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220125403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35025 + ... + 40828.

It is an arithmetic number, because the mean of its divisors is an integer number (41302503).

Almost surely, 2^220125406 is an apocalyptic number.

220125406 is a deficient number, since it is larger than the sum of its proper divisors (110294618).

220125406 is a wasteful number, since it uses less digits than its factorization.

220125406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77306.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 220125406 is about 14836.6238073222. The cubic root of 220125406 is about 603.7957567837.

Adding to 220125406 its reverse (604521022), we get a palindrome (824646428).

The spelling of 220125406 in words is "two hundred twenty million, one hundred twenty-five thousand, four hundred six".