442505625 has 80 divisors (see below), whose sum is σ = 796545024. Its totient is φ = 217800000.

The previous prime is 442505617. The next prime is 442505629. The reversal of 442505625 is 526505244.

It is not a de Polignac number, because 442505625 - 2³ = 442505617 is a prime.

It is a super-2 number, since 2×442505625² = 391622456313281250, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (442505629) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1336710 + ... + 1337040.

Almost surely, 2^442505625 is an apocalyptic number.

It is an amenable number.

442505625 is a deficient number, since it is larger than the sum of its proper divisors (354039399).

442505625 is a wasteful number, since it uses less digits than its factorization.

442505625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408 (or 393 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 33.

The square root of 442505625 is about 21035.8176689189. The cubic root of 442505625 is about 762.0315137042.

The spelling of 442505625 in words is "four hundred forty-two million, five hundred five thousand, six hundred twenty-five".