42203430225 has 72 divisors (see below), whose sum is σ = 85123194624. Its totient is φ = 19802160000.

The previous prime is 42203430221. The next prime is 42203430251. The reversal of 42203430225 is 52203430224.

It is a happy number.

42203430225 is a `hidden beast` number, since 4 + 2 + 2 + 0 + 3 + 430 + 225 = 666.

42203430225 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 42203430225 - 2² = 42203430221 is a prime.

It is a super-2 number, since 2×42203430225² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42203430221) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 198306 + ... + 351755.

It is an arithmetic number, because the mean of its divisors is an integer number (1182266592).

Almost surely, 2^42203430225 is an apocalyptic number.

42203430225 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42203430225 is an abundant number, since it is smaller than the sum of its proper divisors (42919764399).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42203430225 is a wasteful number, since it uses less digits than its factorization.

42203430225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550119 (or 550111 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 27.

Adding to 42203430225 its reverse (52203430224), we get a palindrome (94406860449).

Subtracting 42203430225 from its reverse (52203430224), we obtain a palindrome (9999999999).

The spelling of 42203430225 in words is "forty-two billion, two hundred three million, four hundred thirty thousand, two hundred twenty-five".