42444420025 has 24 divisors (see below), whose sum is σ = 60389509824. Its totient is φ = 28988760000.

The previous prime is 42444420023. The next prime is 42444420059. The reversal of 42444420025 is 52002444424.

It is not a de Polignac number, because 42444420025 - 2¹ = 42444420023 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42444420023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 439222 + ... + 527071.

It is an arithmetic number, because the mean of its divisors is an integer number (2516229576).

Almost surely, 2^42444420025 is an apocalyptic number.

It is an amenable number.

42444420025 is a deficient number, since it is larger than the sum of its proper divisors (17945089799).

42444420025 is a wasteful number, since it uses less digits than its factorization.

42444420025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 966561 (or 966556 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 31.

Adding to 42444420025 its reverse (52002444424), we get a palindrome (94446864449).

The spelling of 42444420025 in words is "forty-two billion, four hundred forty-four million, four hundred twenty thousand, twenty-five".