30225645 has 12 divisors (see below), whose sum is σ = 52391196. Its totient is φ = 16120320.

The previous prime is 30225631. The next prime is 30225649. The reversal of 30225645 is 54652203.

It can be written as a sum of positive squares in 2 ways, for example, as 3164841 + 27060804 = 1779^2 + 5202^2 .

It is not a de Polignac number, because 30225645 - 2⁶ = 30225581 is a prime.

It is a super-3 number, since 3×30225645³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30225649) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 335796 + ... + 335885.

It is an arithmetic number, because the mean of its divisors is an integer number (4365933).

Almost surely, 2^30225645 is an apocalyptic number.

It is an amenable number.

30225645 is a deficient number, since it is larger than the sum of its proper divisors (22165551).

30225645 is a wasteful number, since it uses less digits than its factorization.

30225645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671692 (or 671689 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 30225645 is about 5497.7854632570. The cubic root of 30225645 is about 311.5003405222.

Adding to 30225645 its reverse (54652203), we get a palindrome (84877848).

The spelling of 30225645 in words is "thirty million, two hundred twenty-five thousand, six hundred forty-five".