1671325 has 6 divisors (see below), whose sum is σ = 2072474. Its totient is φ = 1337040.

The previous prime is 1671311. The next prime is 1671337. The reversal of 1671325 is 5231761.

It can be written as a sum of positive squares in 3 ways, for example, as 498436 + 1172889 = 706^2 + 1083^2 .

It is not a de Polignac number, because 1671325 - 2⁹ = 1670813 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 66853 = 1671325 / (1 + 6 + 7 + 1 + 3 + 2 + 5).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1671325.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33402 + ... + 33451.

2^1671325 is an apocalyptic number.

It is an amenable number.

1671325 is a deficient number, since it is larger than the sum of its proper divisors (401149).

1671325 is an equidigital number, since it uses as much as digits as its factorization.

1671325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66863 (or 66858 counting only the distinct ones).

The product of its digits is 1260, while the sum is 25.

The square root of 1671325 is about 1292.7973545765. The cubic root of 1671325 is about 118.6734686937.

The spelling of 1671325 in words is "one million, six hundred seventy-one thousand, three hundred twenty-five".