397000725 has 144 divisors (see below), whose sum is σ = 798234624. Its totient is φ = 172368000.

The previous prime is 397000697. The next prime is 397000729. The reversal of 397000725 is 527000793.

It is not a de Polignac number, because 397000725 - 2⁵ = 397000693 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397000729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 9232554 + ... + 9232596.

It is an arithmetic number, because the mean of its divisors is an integer number (5543296).

Almost surely, 2^397000725 is an apocalyptic number.

It is an amenable number.

397000725 is an abundant number, since it is smaller than the sum of its proper divisors (401233899).

397000725 is a wasteful number, since it uses less digits than its factorization.

397000725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136 (or 112 counting only the distinct ones).

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

The square root of 397000725 is about 19924.8770385164. The cubic root of 397000725 is about 734.9601070486.

The spelling of 397000725 in words is "three hundred ninety-seven million, seven hundred twenty-five", and thus it is an aban number.