442625 has 8 divisors (see below), whose sum is σ = 552552. Its totient is φ = 354000.

The previous prime is 442619. The next prime is 442633. The reversal of 442625 is 526244.

It can be written as a sum of positive squares in 4 ways, for example, as 27889 + 414736 = 167^2 + 644^2 .

It is not a de Polignac number, because 442625 - 2⁴ = 442609 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 442625.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 442625.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1646 + ... + 1895.

It is an arithmetic number, because the mean of its divisors is an integer number (69069).

2⁴⁴²⁶²⁵ is an apocalyptic number.

It is an amenable number.

442625 is a deficient number, since it is larger than the sum of its proper divisors (109927).

442625 is an equidigital number, since it uses as much as digits as its factorization.

442625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3556 (or 3546 counting only the distinct ones).

The product of its digits is 1920, while the sum is 23.

The square root of 442625 is about 665.3006839016. The cubic root of 442625 is about 76.2100032105.

Adding to 442625 its reverse (526244), we get a palindrome (968869).

The spelling of 442625 in words is "four hundred forty-two thousand, six hundred twenty-five".