397675725 has 24 divisors (see below), whose sum is σ = 660023232. Its totient is φ = 211276800.

The previous prime is 397675721. The next prime is 397675771. The reversal of 397675725 is 527576793.

It is not a de Polignac number, because 397675725 - 2² = 397675721 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397675721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9645 + ... + 29805.

It is an arithmetic number, because the mean of its divisors is an integer number (27500968).

Almost surely, 2^397675725 is an apocalyptic number.

It is an amenable number.

397675725 is a deficient number, since it is larger than the sum of its proper divisors (262347507).

397675725 is a wasteful number, since it uses less digits than its factorization.

397675725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20437 (or 20432 counting only the distinct ones).

The product of its digits is 2778300, while the sum is 51.

The square root of 397675725 is about 19941.8084686420. The cubic root of 397675725 is about 735.3764095412.

The spelling of 397675725 in words is "three hundred ninety-seven million, six hundred seventy-five thousand, seven hundred twenty-five".