442243925 has 12 divisors (see below), whose sum is σ = 558730980. Its totient is φ = 347118720.

The previous prime is 442243909. The next prime is 442243957. The reversal of 442243925 is 529342244.

It can be written as a sum of positive squares in 6 ways, for example, as 70795396 + 371448529 = 8414^2 + 19273^2 .

It is not a de Polignac number, because 442243925 - 2⁴ = 442243909 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 165560 + ... + 168209.

It is an arithmetic number, because the mean of its divisors is an integer number (46560915).

Almost surely, 2^442243925 is an apocalyptic number.

It is an amenable number.

442243925 is a deficient number, since it is larger than the sum of its proper divisors (116487055).

442243925 is a wasteful number, since it uses less digits than its factorization.

442243925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333832 (or 333827 counting only the distinct ones).

The product of its digits is 69120, while the sum is 35.

The square root of 442243925 is about 21029.5964060179. The cubic root of 442243925 is about 761.8812610202.

The spelling of 442243925 in words is "four hundred forty-two million, two hundred forty-three thousand, nine hundred twenty-five".