6694425 has 18 divisors (see below), whose sum is σ = 11990862. Its totient is φ = 3570240.

The previous prime is 6694417. The next prime is 6694433. The reversal of 6694425 is 5244966.

It is an interprime number because it is at equal distance from previous prime (6694417) and next prime (6694433).

It can be written as a sum of positive squares in 3 ways, for example, as 1937664 + 4756761 = 1392^2 + 2181^2 .

It is not a de Polignac number, because 6694425 - 2³ = 6694417 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6694425.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 14652 + ... + 15101.

It is an arithmetic number, because the mean of its divisors is an integer number (666159).

Almost surely, 2^6694425 is an apocalyptic number.

It is an amenable number.

6694425 is a deficient number, since it is larger than the sum of its proper divisors (5296437).

6694425 is a wasteful number, since it uses less digits than its factorization.

6694425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29769 (or 29761 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 6694425 is about 2587.3586917936. The cubic root of 6694425 is about 188.4680599843.

It can be divided in two parts, 6 and 694425, that added together give a triangular number (694431 = T₁₁₇₈).

The spelling of 6694425 in words is "six million, six hundred ninety-four thousand, four hundred twenty-five".