442246725 has 18 divisors (see below), whose sum is σ = 792113426. Its totient is φ = 235864800.

The previous prime is 442246711. The next prime is 442246733. The reversal of 442246725 is 527642244.

It can be written as a sum of positive squares in 3 ways, for example, as 2883204 + 439363521 = 1698^2 + 20961^2 .

It is not a de Polignac number, because 442246725 - 2¹⁶ = 442181189 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 442246725.

It is a congruent number.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 982546 + ... + 982995.

Almost surely, 2^442246725 is an apocalyptic number.

442246725 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

442246725 is a deficient number, since it is larger than the sum of its proper divisors (349866701).

442246725 is a wasteful number, since it uses less digits than its factorization.

442246725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1965557 (or 1965549 counting only the distinct ones).

The product of its digits is 107520, while the sum is 36.

The square root of 442246725 is about 21029.6629787546. The cubic root of 442246725 is about 761.8828689285.

Adding to 442246725 its reverse (527642244), we get a palindrome (969888969).

The spelling of 442246725 in words is "four hundred forty-two million, two hundred forty-six thousand, seven hundred twenty-five".