42235253225 has 24 divisors (see below), whose sum is σ = 57143530080. Its totient is φ = 30710768000.

The previous prime is 42235253219. The next prime is 42235253227. The reversal of 42235253225 is 52235253224.

It is a happy number.

It is not a de Polignac number, because 42235253225 - 2⁴ = 42235253209 is a prime.

It is a super-2 number, since 2×42235253225² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42235253227) 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, 1919285 + ... + 1941165.

It is an arithmetic number, because the mean of its divisors is an integer number (2380980420).

Almost surely, 2^42235253225 is an apocalyptic number.

It is an amenable number.

42235253225 is a deficient number, since it is larger than the sum of its proper divisors (14908276855).

42235253225 is a wasteful number, since it uses less digits than its factorization.

42235253225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28921 (or 28916 counting only the distinct ones).

The product of its digits is 144000, while the sum is 35.

Subtracting 42235253225 from its reverse (52235253224), we obtain a palindrome (9999999999).

The spelling of 42235253225 in words is "forty-two billion, two hundred thirty-five million, two hundred fifty-three thousand, two hundred twenty-five".