42052225 has 24 divisors (see below), whose sum is σ = 55274240. Its totient is φ = 31648320.

The previous prime is 42052217. The next prime is 42052229. The reversal of 42052225 is 52225024.

It is a happy number.

It is not a de Polignac number, because 42052225 - 2³ = 42052217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42052196 and 42052205.

It is not an unprimeable number, because it can be changed into a prime (42052229) 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, 105727 + ... + 106123.

Almost surely, 2^42052225 is an apocalyptic number.

It is an amenable number.

42052225 is a deficient number, since it is larger than the sum of its proper divisors (13222015).

42052225 is a wasteful number, since it uses less digits than its factorization.

42052225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649 (or 644 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 42052225 is about 6484.7686928679. The cubic root of 42052225 is about 347.7466805997.

Adding to 42052225 its reverse (52225024), we get a palindrome (94277249).

The spelling of 42052225 in words is "forty-two million, fifty-two thousand, two hundred twenty-five".