6394625 has 8 divisors (see below), whose sum is σ = 7980648. Its totient is φ = 5115600.

The previous prime is 6394607. The next prime is 6394627. The reversal of 6394625 is 5264936.

It can be written as a sum of positive squares in 4 ways, for example, as 124609 + 6270016 = 353^2 + 2504^2 .

It is not a de Polignac number, because 6394625 - 2¹⁴ = 6378241 is a prime.

It is a d-powerful number, because it can be written as 6⁷ + 3¹⁴ + 9² + 4¹⁰ + 6⁷ + 2 + 5⁵ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6394627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25454 + ... + 25703.

It is an arithmetic number, because the mean of its divisors is an integer number (997581).

Almost surely, 2^6394625 is an apocalyptic number.

It is an amenable number.

6394625 is a deficient number, since it is larger than the sum of its proper divisors (1586023).

6394625 is an equidigital number, since it uses as much as digits as its factorization.

6394625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51172 (or 51162 counting only the distinct ones).

The product of its digits is 38880, while the sum is 35.

The square root of 6394625 is about 2528.7595773422. The cubic root of 6394625 is about 185.6115626622.

The spelling of 6394625 in words is "six million, three hundred ninety-four thousand, six hundred twenty-five".