671425 has 12 divisors (see below), whose sum is σ = 843696. Its totient is φ = 530000.

The previous prime is 671417. The next prime is 671431. The reversal of 671425 is 524176.

671425 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 671425 - 2³ = 671417 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

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 671425.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2550 + ... + 2800.

It is an arithmetic number, because the mean of its divisors is an integer number (70308).

2⁶⁷¹⁴²⁵ is an apocalyptic number.

It is an amenable number.

671425 is a deficient number, since it is larger than the sum of its proper divisors (172271).

671425 is a wasteful number, since it uses less digits than its factorization.

671425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368 (or 363 counting only the distinct ones).

The product of its digits is 1680, while the sum is 25.

The square root of 671425 is about 819.4052721334. The cubic root of 671425 is about 87.5653932929.

The spelling of 671425 in words is "six hundred seventy-one thousand, four hundred twenty-five".