42445425 has 24 divisors (see below), whose sum is σ = 76557600. Its totient is φ = 20579200.

The previous prime is 42445409. The next prime is 42445451. The reversal of 42445425 is 52454424.

42445425 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42445425 - 2⁴ = 42445409 is a prime.

It is a super-2 number, since 2×42445425² = 3603228206861250, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 42445392 and 42445401.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24900 + ... + 26549.

It is an arithmetic number, because the mean of its divisors is an integer number (3189900).

Almost surely, 2^42445425 is an apocalyptic number.

It is an amenable number.

42445425 is a deficient number, since it is larger than the sum of its proper divisors (34112175).

42445425 is a wasteful number, since it uses less digits than its factorization.

42445425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51473 (or 51468 counting only the distinct ones).

The product of its digits is 25600, while the sum is 30.

The square root of 42445425 is about 6515.0153491761. The cubic root of 42445425 is about 348.8271626900.

Adding to 42445425 its reverse (52454424), we get a palindrome (94899849).

It can be divided in two parts, 4244 and 5425, that added together give a palindrome (9669).

The spelling of 42445425 in words is "forty-two million, four hundred forty-five thousand, four hundred twenty-five".