671225 has 6 divisors (see below), whose sum is σ = 832350. Its totient is φ = 536960.

The previous prime is 671219. The next prime is 671233. The reversal of 671225 is 522176.

It can be written as a sum of positive squares in 3 ways, for example, as 11881 + 659344 = 109^2 + 812^2 .

It is not a de Polignac number, because 671225 - 2⁶ = 671161 is a prime.

It is a d-powerful number, because it can be written as 6⁷ + 7³ + 2⁶ + 1 + 2⁸ + 5⁸ .

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 671225.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13400 + ... + 13449.

It is an arithmetic number, because the mean of its divisors is an integer number (138725).

2⁶⁷¹²²⁵ is an apocalyptic number.

It is an amenable number.

671225 is a deficient number, since it is larger than the sum of its proper divisors (161125).

671225 is a wasteful number, since it uses less digits than its factorization.

671225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26859 (or 26854 counting only the distinct ones).

The product of its digits is 840, while the sum is 23.

The square root of 671225 is about 819.2832233117. The cubic root of 671225 is about 87.5566979470.

It can be divided in two parts, 671 and 225, that multiplied together give a triangular number (150975 = T₅₄₉).

The spelling of 671225 in words is "six hundred seventy-one thousand, two hundred twenty-five".