396428725 has 24 divisors (see below), whose sum is σ = 612871488. Its totient is φ = 247123200.

The previous prime is 396428723. The next prime is 396428761. The reversal of 396428725 is 527824693.

396428725 = 239² + 240² + ... + 1063².

It is not a de Polignac number, because 396428725 - 2¹ = 396428723 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396428723) 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, 101044 + ... + 104893.

It is an arithmetic number, because the mean of its divisors is an integer number (25536312).

Almost surely, 2^396428725 is an apocalyptic number.

396428725 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

396428725 is a deficient number, since it is larger than the sum of its proper divisors (216442763).

396428725 is a wasteful number, since it uses less digits than its factorization.

396428725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205965 (or 205960 counting only the distinct ones).

The product of its digits is 725760, while the sum is 46.

The square root of 396428725 is about 19910.5179490640. The cubic root of 396428725 is about 734.6069597118.

The spelling of 396428725 in words is "three hundred ninety-six million, four hundred twenty-eight thousand, seven hundred twenty-five".