1671425 has 12 divisors (see below), whose sum is σ = 2368896. Its totient is φ = 1146000.

The previous prime is 1671421. The next prime is 1671431. The reversal of 1671425 is 5241761.

It is not a de Polignac number, because 1671425 - 2² = 1671421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1671394 and 1671403.

It is not an unprimeable number, because it can be changed into a prime (1671421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4601 + ... + 4950.

It is an arithmetic number, because the mean of its divisors is an integer number (197408).

2^1671425 is an apocalyptic number.

It is an amenable number.

1671425 is a deficient number, since it is larger than the sum of its proper divisors (697471).

1671425 is an equidigital number, since it uses as much as digits as its factorization.

1671425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9568 (or 9563 counting only the distinct ones).

The product of its digits is 1680, while the sum is 26.

The square root of 1671425 is about 1292.8360298197. The cubic root of 1671425 is about 118.6758355005.

The spelling of 1671425 in words is "one million, six hundred seventy-one thousand, four hundred twenty-five".