442225001 has 4 divisors (see below), whose sum is σ = 449720400. Its totient is φ = 434729604.

The previous prime is 442224977. The next prime is 442225033. The reversal of 442225001 is 100522244.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442225001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (442225061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3747611 + ... + 3747728.

It is an arithmetic number, because the mean of its divisors is an integer number (112430100).

Almost surely, 2^442225001 is an apocalyptic number.

It is an amenable number.

442225001 is a deficient number, since it is larger than the sum of its proper divisors (7495399).

442225001 is an equidigital number, since it uses as much as digits as its factorization.

442225001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7495398.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 442225001 is about 21029.1464638962. The cubic root of 442225001 is about 761.8703936792.

Adding to 442225001 its reverse (100522244), we get a palindrome (542747245).

The spelling of 442225001 in words is "four hundred forty-two million, two hundred twenty-five thousand, one".