442111025 has 12 divisors (see below), whose sum is σ = 549195504. Its totient is φ = 353058000.

The previous prime is 442111009. The next prime is 442111049. The reversal of 442111025 is 520111244.

It is a happy number.

It is not a de Polignac number, because 442111025 - 2⁴ = 442111009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 442110988 and 442111006.

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, 1211 + ... + 29760.

It is an arithmetic number, because the mean of its divisors is an integer number (45766292).

Almost surely, 2^442111025 is an apocalyptic number.

It is an amenable number.

442111025 is a deficient number, since it is larger than the sum of its proper divisors (107084479).

442111025 is a wasteful number, since it uses less digits than its factorization.

442111025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31552 (or 31547 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 442111025 is about 21026.4363361935. The cubic root of 442111025 is about 761.8049349942.

Adding to 442111025 its reverse (520111244), we get a palindrome (962222269).

The spelling of 442111025 in words is "four hundred forty-two million, one hundred eleven thousand, twenty-five".