42231213225 has 36 divisors (see below), whose sum is σ = 76922866800. Its totient is φ = 22141555680.

The previous prime is 42231213223. The next prime is 42231213319. The reversal of 42231213225 is 52231213224.

42231213225 is a `hidden beast` number, since 4 + 22 + 312 + 1 + 322 + 5 = 666.

42231213225 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 42231213225 - 2¹ = 42231213223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42231213223) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1577355 + ... + 1603904.

It is an arithmetic number, because the mean of its divisors is an integer number (2136746300).

Almost surely, 2^42231213225 is an apocalyptic number.

42231213225 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42231213225 is a deficient number, since it is larger than the sum of its proper divisors (34691653575).

42231213225 is a wasteful number, since it uses less digits than its factorization.

42231213225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3181334 (or 3181326 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

Adding to 42231213225 its reverse (52231213224), we get a palindrome (94462426449).

Subtracting 42231213225 from its reverse (52231213224), we obtain a palindrome (9999999999).

The spelling of 42231213225 in words is "forty-two billion, two hundred thirty-one million, two hundred thirteen thousand, two hundred twenty-five".