442481625 has 48 divisors (see below), whose sum is σ = 801335808. Its totient is φ = 234900000.

The previous prime is 442481621. The next prime is 442481629. The reversal of 442481625 is 526184244.

442481625 is a `hidden beast` number, since 4 + 4 + 24 + 8 + 1 + 625 = 666.

It is an interprime number because it is at equal distance from previous prime (442481621) and next prime (442481629).

It is not a de Polignac number, because 442481625 - 2² = 442481621 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 442481625.

It is not an unprimeable number, because it can be changed into a prime (442481621) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 281592 + ... + 283158.

It is an arithmetic number, because the mean of its divisors is an integer number (16694496).

Almost surely, 2^442481625 is an apocalyptic number.

442481625 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

442481625 is a deficient number, since it is larger than the sum of its proper divisors (358854183).

442481625 is a wasteful number, since it uses less digits than its factorization.

442481625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1839 (or 1826 counting only the distinct ones).

The product of its digits is 61440, while the sum is 36.

The square root of 442481625 is about 21035.2472055833. The cubic root of 442481625 is about 762.0177367893.

The spelling of 442481625 in words is "four hundred forty-two million, four hundred eighty-one thousand, six hundred twenty-five".