42225252 has 12 divisors (see below), whose sum is σ = 98525616. Its totient is φ = 14075080.

The previous prime is 42225173. The next prime is 42225257. The reversal of 42225252 is 25252224.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (42225257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1759374 + ... + 1759397.

It is an arithmetic number, because the mean of its divisors is an integer number (8210468).

Almost surely, 2^42225252 is an apocalyptic number.

It is an amenable number.

42225252 is an abundant number, since it is smaller than the sum of its proper divisors (56300364).

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

42225252 is a wasteful number, since it uses less digits than its factorization.

42225252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3518778 (or 3518776 counting only the distinct ones).

The product of its digits is 3200, while the sum is 24.

The square root of 42225252 is about 6498.0960288380. The cubic root of 42225252 is about 348.2229711248. Note that the first 3 decimals are identical.

Adding to 42225252 its reverse (25252224), we get a palindrome (67477476).

The spelling of 42225252 in words is "forty-two million, two hundred twenty-five thousand, two hundred fifty-two".