42252225 has 48 divisors (see below), whose sum is σ = 76423680. Its totient is φ = 20505600.

The previous prime is 42252193. The next prime is 42252227. The reversal of 42252225 is 52225224.

It is a happy number.

It is not a de Polignac number, because 42252225 - 2⁵ = 42252193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42252195 and 42252204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42252227) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 38991 + ... + 40059.

It is an arithmetic number, because the mean of its divisors is an integer number (1592160).

Almost surely, 2^42252225 is an apocalyptic number.

It is an amenable number.

42252225 is a deficient number, since it is larger than the sum of its proper divisors (34171455).

42252225 is a wasteful number, since it uses less digits than its factorization.

42252225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130 (or 1125 counting only the distinct ones).

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

The square root of 42252225 is about 6500.1711515929. The cubic root of 42252225 is about 348.2971022706.

Adding to 42252225 its reverse (52225224), we get a palindrome (94477449).

The spelling of 42252225 in words is "forty-two million, two hundred fifty-two thousand, two hundred twenty-five".