42200225 has 12 divisors (see below), whose sum is σ = 52505196. Its totient is φ = 33646080.

The previous prime is 42200203. The next prime is 42200237. The reversal of 42200225 is 52200224.

It can be written as a sum of positive squares in 6 ways, for example, as 1852321 + 40347904 = 1361^2 + 6352^2 .

It is not a de Polignac number, because 42200225 - 2⁶ = 42200161 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5129 + ... + 10521.

It is an arithmetic number, because the mean of its divisors is an integer number (4375433).

Almost surely, 2^42200225 is an apocalyptic number.

It is an amenable number.

42200225 is a deficient number, since it is larger than the sum of its proper divisors (10304971).

42200225 is a wasteful number, since it uses less digits than its factorization.

42200225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5716 (or 5711 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 42200225 is about 6496.1700254842. The cubic root of 42200225 is about 348.1541600205.

Adding to 42200225 its reverse (52200224), we get a palindrome (94400449).

Subtracting 42200225 from its reverse (52200224), we obtain a palindrome (9999999).

The spelling of 42200225 in words is "forty-two million, two hundred thousand, two hundred twenty-five".