442725 has 12 divisors (see below), whose sum is σ = 732096. Its totient is φ = 236080.

The previous prime is 442721. The next prime is 442733. The reversal of 442725 is 527244.

It is not a de Polignac number, because 442725 - 2² = 442721 is a prime.

442725 is a lucky number.

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 442695 and 442704.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 442725.

It is not an unprimeable number, because it can be changed into a prime (442721) 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, 2877 + ... + 3026.

It is an arithmetic number, because the mean of its divisors is an integer number (61008).

2⁴⁴²⁷²⁵ is an apocalyptic number.

It is an amenable number.

442725 is a deficient number, since it is larger than the sum of its proper divisors (289371).

442725 is a wasteful number, since it uses less digits than its factorization.

442725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5916 (or 5911 counting only the distinct ones).

The product of its digits is 2240, while the sum is 24.

The square root of 442725 is about 665.3758336459. The cubic root of 442725 is about 76.2157420236.

Adding to 442725 its reverse (527244), we get a palindrome (969969).

The spelling of 442725 in words is "four hundred forty-two thousand, seven hundred twenty-five".