42133216525 has 6 divisors (see below), whose sum is σ = 52245188522. Its totient is φ = 33706573200.

The previous prime is 42133216523. The next prime is 42133216537. The reversal of 42133216525 is 52561233124.

It can be written as a sum of positive squares in 3 ways, for example, as 4012009 + 42129204516 = 2003^2 + 205254^2 .

It is not a de Polignac number, because 42133216525 - 2¹ = 42133216523 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42133216523) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 842664306 + ... + 842664355.

Almost surely, 2^42133216525 is an apocalyptic number.

It is an amenable number.

42133216525 is a deficient number, since it is larger than the sum of its proper divisors (10111971997).

42133216525 is a wasteful number, since it uses less digits than its factorization.

42133216525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1685328671 (or 1685328666 counting only the distinct ones).

The product of its digits is 43200, while the sum is 34.

Adding to 42133216525 its reverse (52561233124), we get a palindrome (94694449649).

The spelling of 42133216525 in words is "forty-two billion, one hundred thirty-three million, two hundred sixteen thousand, five hundred twenty-five".