442315025 has 6 divisors (see below), whose sum is σ = 548470662. Its totient is φ = 353852000.

The previous prime is 442315021. The next prime is 442315067. The reversal of 442315025 is 520513244.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 46185616 + 396129409 = 6796^2 + 19903^2 .

It is not a de Polignac number, because 442315025 - 2² = 442315021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 442314985 and 442315003.

It is not an unprimeable number, because it can be changed into a prime (442315021) 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 5 ways as a sum of consecutive naturals, for example, 8846276 + ... + 8846325.

It is an arithmetic number, because the mean of its divisors is an integer number (91411777).

Almost surely, 2^442315025 is an apocalyptic number.

It is an amenable number.

442315025 is a deficient number, since it is larger than the sum of its proper divisors (106155637).

442315025 is a wasteful number, since it uses less digits than its factorization.

442315025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17692611 (or 17692606 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 442315025 is about 21031.2868127464. The cubic root of 442315025 is about 761.9220883042.

Adding to 442315025 its reverse (520513244), we get a palindrome (962828269).

It can be divided in two parts, 4 and 42315025, that multiplied together give a square (169260100 = 13010²).

The spelling of 442315025 in words is "four hundred forty-two million, three hundred fifteen thousand, twenty-five".