6521125 has 16 divisors (see below), whose sum is σ = 8766576. Its totient is φ = 4814400.

The previous prime is 6521111. The next prime is 6521131. The reversal of 6521125 is 5211256.

6521125 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 2169729 + 4351396 = 1473^2 + 2086^2 .

It is not a de Polignac number, because 6521125 - 2¹⁷ = 6390053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6521096 and 6521105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 382 + ... + 3631.

It is an arithmetic number, because the mean of its divisors is an integer number (547911).

Almost surely, 2^6521125 is an apocalyptic number.

6521125 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6521125 is a deficient number, since it is larger than the sum of its proper divisors (2245451).

6521125 is a wasteful number, since it uses less digits than its factorization.

6521125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4041 (or 4031 counting only the distinct ones).

The product of its digits is 600, while the sum is 22.

The square root of 6521125 is about 2553.6493494605. The cubic root of 6521125 is about 186.8275168973.

The spelling of 6521125 in words is "six million, five hundred twenty-one thousand, one hundred twenty-five".