397225 has 6 divisors (see below), whose sum is σ = 492590. Its totient is φ = 317760.

The previous prime is 397223. The next prime is 397237. The reversal of 397225 is 522793.

It can be written as a sum of positive squares in 3 ways, for example, as 4096 + 393129 = 64^2 + 627^2 .

It is not a de Polignac number, because 397225 - 2¹ = 397223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 397193 and 397202.

It is not an unprimeable number, because it can be changed into a prime (397223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7920 + ... + 7969.

2³⁹⁷²²⁵ is an apocalyptic number.

It is an amenable number.

397225 is a deficient number, since it is larger than the sum of its proper divisors (95365).

397225 is a wasteful number, since it uses less digits than its factorization.

397225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15899 (or 15894 counting only the distinct ones).

The product of its digits is 3780, while the sum is 28.

The square root of 397225 is about 630.2578837270. The cubic root of 397225 is about 73.5098479716.

The spelling of 397225 in words is "three hundred ninety-seven thousand, two hundred twenty-five".