442545025 has 12 divisors (see below), whose sum is σ = 590968252. Its totient is φ = 326802240.

The previous prime is 442545023. The next prime is 442545029. The reversal of 442545025 is 520545244.

It can be written as a sum of positive squares in 6 ways, for example, as 40462321 + 402082704 = 6361^2 + 20052^2 .

It is not a de Polignac number, because 442545025 - 2¹ = 442545023 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442545023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 680514 + ... + 681163.

Almost surely, 2^442545025 is an apocalyptic number.

It is an amenable number.

442545025 is a deficient number, since it is larger than the sum of its proper divisors (148423227).

442545025 is a wasteful number, since it uses less digits than its factorization.

442545025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1361700 (or 1361695 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 31.

The square root of 442545025 is about 21036.7541460179. The cubic root of 442545025 is about 762.0541297260.

The spelling of 442545025 in words is "four hundred forty-two million, five hundred forty-five thousand, twenty-five".