6816425 has 24 divisors (see below), whose sum is σ = 10540992. Its totient is φ = 4248000.

The previous prime is 6816413. The next prime is 6816427. The reversal of 6816425 is 5246186.

6816425 = T₁₈₇ + T₁₈₈ + ... + T₃₆₁.

It is not a de Polignac number, because 6816425 - 2⁶ = 6816361 is a prime.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 6816391 and 6816400.

It is not an unprimeable number, because it can be changed into a prime (6816427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 155 + ... + 3695.

It is an arithmetic number, because the mean of its divisors is an integer number (439208).

Almost surely, 2^6816425 is an apocalyptic number.

It is an amenable number.

6816425 is a deficient number, since it is larger than the sum of its proper divisors (3724567).

6816425 is a wasteful number, since it uses less digits than its factorization.

6816425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3569 (or 3564 counting only the distinct ones).

The product of its digits is 11520, while the sum is 32.

The square root of 6816425 is about 2610.8284125924. The cubic root of 6816425 is about 189.6060628332.

The spelling of 6816425 in words is "six million, eight hundred sixteen thousand, four hundred twenty-five".