397725 has 12 divisors (see below), whose sum is σ = 657696. Its totient is φ = 212080.

The previous prime is 397723. The next prime is 397729. The reversal of 397725 is 527793.

It is not a de Polignac number, because 397725 - 2¹ = 397723 is a prime.

It is an Ulam number.

397725 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397721) 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, 2577 + ... + 2726.

It is an arithmetic number, because the mean of its divisors is an integer number (54808).

2³⁹⁷⁷²⁵ is an apocalyptic number.

It is an amenable number.

397725 is a deficient number, since it is larger than the sum of its proper divisors (259971).

397725 is a wasteful number, since it uses less digits than its factorization.

397725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5316 (or 5311 counting only the distinct ones).

The product of its digits is 13230, while the sum is 33.

The square root of 397725 is about 630.6544220094. The cubic root of 397725 is about 73.5406781168.

The spelling of 397725 in words is "three hundred ninety-seven thousand, seven hundred twenty-five".