30105225 has 18 divisors (see below), whose sum is σ = 53922206. Its totient is φ = 16056000.

The previous prime is 30105209. The next prime is 30105307. The reversal of 30105225 is 52250103.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 8982009 + 21123216 = 2997^2 + 4596^2 .

It is not a de Polignac number, because 30105225 - 2⁴ = 30105209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30105198 and 30105207.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 66676 + ... + 67125.

Almost surely, 2^30105225 is an apocalyptic number.

It is an amenable number.

30105225 is a deficient number, since it is larger than the sum of its proper divisors (23816981).

30105225 is a wasteful number, since it uses less digits than its factorization.

30105225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133817 (or 133809 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 30105225 is about 5486.8228511589. The cubic root of 30105225 is about 311.0861139449.

Adding to 30105225 its reverse (52250103), we get a palindrome (82355328).

The spelling of 30105225 in words is "thirty million, one hundred five thousand, two hundred twenty-five".