1678425 has 48 divisors (see below), whose sum is σ = 3333120. Its totient is φ = 728640.

The previous prime is 1678423. The next prime is 1678429. The reversal of 1678425 is 5248761.

It is not a de Polignac number, because 1678425 - 2¹ = 1678423 is a prime.

It is a super-4 number, since 4×1678425⁴ (a number of 26 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1678421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12006 + ... + 12144.

It is an arithmetic number, because the mean of its divisors is an integer number (69440).

2^1678425 is an apocalyptic number.

1678425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1678425 is a deficient number, since it is larger than the sum of its proper divisors (1654695).

1678425 is a wasteful number, since it uses less digits than its factorization.

1678425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182 (or 177 counting only the distinct ones).

The product of its digits is 13440, while the sum is 33.

The square root of 1678425 is about 1295.5404277752. The cubic root of 1678425 is about 118.8412779278.

The spelling of 1678425 in words is "one million, six hundred seventy-eight thousand, four hundred twenty-five".