7122125 has 16 divisors (see below), whose sum is σ = 8963136. Its totient is φ = 5650000.

The previous prime is 7122121. The next prime is 7122149. The reversal of 7122125 is 5212217.

It is not a de Polignac number, because 7122125 - 2² = 7122121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7122097 and 7122106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7122121) 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, 28250 + ... + 28500.

It is an arithmetic number, because the mean of its divisors is an integer number (560196).

Almost surely, 2^7122125 is an apocalyptic number.

It is an amenable number.

7122125 is a deficient number, since it is larger than the sum of its proper divisors (1841011).

7122125 is a wasteful number, since it uses less digits than its factorization.

7122125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493 (or 483 counting only the distinct ones).

The product of its digits is 280, while the sum is 20.

The square root of 7122125 is about 2668.7309718291. The cubic root of 7122125 is about 192.3991713491.

It can be divided in two parts, 712212 and 5, that added together give a palindrome (712217).

The spelling of 7122125 in words is "seven million, one hundred twenty-two thousand, one hundred twenty-five".