7021125 has 36 divisors (see below), whose sum is σ = 12818988. Its totient is φ = 3697200.

The previous prime is 7021117. The next prime is 7021139. The reversal of 7021125 is 5211207.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

7021125 is nontrivially palindromic in base 14.

It can be written as a sum of positive squares in 2 ways, for example, as 224676 + 6796449 = 474^2 + 2607^2 .

It is not a de Polignac number, because 7021125 - 2³ = 7021117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7021098 and 7021107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 88836 + ... + 88914.

It is an arithmetic number, because the mean of its divisors is an integer number (356083).

Almost surely, 2^7021125 is an apocalyptic number.

7021125 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

7021125 is a deficient number, since it is larger than the sum of its proper divisors (5797863).

7021125 is an equidigital number, since it uses as much as digits as its factorization.

7021125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179 (or 87 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 7021125 is about 2649.7405533373. The cubic root of 7021125 is about 191.4853567917.

The spelling of 7021125 in words is "seven million, twenty-one thousand, one hundred twenty-five".