1671225 has 12 divisors (see below), whose sum is σ = 2763216. Its totient is φ = 891280.

The previous prime is 1671223. The next prime is 1671227. The reversal of 1671225 is 5221761.

It is an interprime number because it is at equal distance from previous prime (1671223) and next prime (1671227).

It is not a de Polignac number, because 1671225 - 2¹ = 1671223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1671195 and 1671204.

It is not an unprimeable number, because it can be changed into a prime (1671223) 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, 11067 + ... + 11216.

It is an arithmetic number, because the mean of its divisors is an integer number (230268).

2^1671225 is an apocalyptic number.

1671225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1671225 is a deficient number, since it is larger than the sum of its proper divisors (1091991).

1671225 is a wasteful number, since it uses less digits than its factorization.

1671225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22296 (or 22291 counting only the distinct ones).

The product of its digits is 840, while the sum is 24.

The square root of 1671225 is about 1292.7586781762. The cubic root of 1671225 is about 118.6711017925.

Adding to 1671225 its reverse (5221761), we get a palindrome (6892986).

The spelling of 1671225 in words is "one million, six hundred seventy-one thousand, two hundred twenty-five".