442456425 has 60 divisors (see below), whose sum is σ = 825580096. Its totient is φ = 234252000.

The previous prime is 442456387. The next prime is 442456453. The reversal of 442456425 is 524654244.

442456425 is a `hidden beast` number, since 4 + 4 + 2 + 4 + 5 + 642 + 5 = 666.

It is not a de Polignac number, because 442456425 - 2⁶ = 442456361 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 442456425.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 305052 + ... + 306498.

Almost surely, 2^442456425 is an apocalyptic number.

442456425 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

442456425 is a deficient number, since it is larger than the sum of its proper divisors (383123671).

442456425 is a wasteful number, since it uses less digits than its factorization.

442456425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1620 (or 1606 counting only the distinct ones).

The product of its digits is 153600, while the sum is 36.

The square root of 442456425 is about 21034.6482024302. The cubic root of 442456425 is about 762.0032704925.

The spelling of 442456425 in words is "four hundred forty-two million, four hundred fifty-six thousand, four hundred twenty-five".