6815125 has 8 divisors (see below), whose sum is σ = 8505432. Its totient is φ = 5452000.

The previous prime is 6815117. The next prime is 6815131. The reversal of 6815125 is 5215186.

6815125 = 24² + 25² + ... + 273².

It can be written as a sum of positive squares in 4 ways, for example, as 459684 + 6355441 = 678^2 + 2521^2 .

It is not a de Polignac number, because 6815125 - 2³ = 6815117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6815093 and 6815102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27136 + ... + 27385.

It is an arithmetic number, because the mean of its divisors is an integer number (1063179).

Almost surely, 2^6815125 is an apocalyptic number.

It is an amenable number.

6815125 is a deficient number, since it is larger than the sum of its proper divisors (1690307).

6815125 is an equidigital number, since it uses as much as digits as its factorization.

6815125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54536 (or 54526 counting only the distinct ones).

The product of its digits is 2400, while the sum is 28.

The square root of 6815125 is about 2610.5794375962. The cubic root of 6815125 is about 189.5940084424.

The spelling of 6815125 in words is "six million, eight hundred fifteen thousand, one hundred twenty-five".