394225 has 12 divisors (see below), whose sum is σ = 526876. Its totient is φ = 290880.

The previous prime is 394223. The next prime is 394241. The reversal of 394225 is 522493.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 136161 + 258064 = 369^2 + 508^2 .

It is not a de Polignac number, because 394225 - 2¹ = 394223 is a prime.

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

It is a d-powerful number, because it can be written as 3⁵ + 9³ + 2⁵ + 4⁹ + 2¹⁷ + 5 .

It is a Duffinian number.

394225 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 394225.

It is not an unprimeable number, because it can be changed into a prime (394223) 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, 282 + ... + 931.

2³⁹⁴²²⁵ is an apocalyptic number.

It is an amenable number.

394225 is a deficient number, since it is larger than the sum of its proper divisors (132651).

394225 is a wasteful number, since it uses less digits than its factorization.

394225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1236 (or 1231 counting only the distinct ones).

The product of its digits is 2160, while the sum is 25.

The square root of 394225 is about 627.8733948815. The cubic root of 394225 is about 73.3243216658.

The spelling of 394225 in words is "three hundred ninety-four thousand, two hundred twenty-five".