42226225 has 6 divisors (see below), whose sum is σ = 52360550. Its totient is φ = 33780960.

The previous prime is 42226207. The next prime is 42226231. The reversal of 42226225 is 52262224.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 7096896 + 35129329 = 2664^2 + 5927^2 .

It is a de Polignac number, because none of the positive numbers 2^k-42226225 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 1689049 = 42226225 / (4 + 2 + 2 + 2 + 6 + 2 + 2 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 42226225.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 844500 + ... + 844549.

Almost surely, 2^42226225 is an apocalyptic number.

It is an amenable number.

42226225 is a deficient number, since it is larger than the sum of its proper divisors (10134325).

42226225 is a wasteful number, since it uses less digits than its factorization.

42226225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1689059 (or 1689054 counting only the distinct ones).

The product of its digits is 3840, while the sum is 25.

The square root of 42226225 is about 6498.1708964908. The cubic root of 42226225 is about 348.2256458145.

Adding to 42226225 its reverse (52262224), we get a palindrome (94488449).

The spelling of 42226225 in words is "forty-two million, two hundred twenty-six thousand, two hundred twenty-five".