30665125 has 8 divisors (see below), whose sum is σ = 38270232. Its totient is φ = 24532000.

The previous prime is 30665077. The next prime is 30665137. The reversal of 30665125 is 52156603.

It can be written as a sum of positive squares in 4 ways, for example, as 2934369 + 27730756 = 1713^2 + 5266^2 .

It is not a de Polignac number, because 30665125 - 2²³ = 22276517 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30665093 and 30665102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122536 + ... + 122785.

It is an arithmetic number, because the mean of its divisors is an integer number (4783779).

Almost surely, 2^30665125 is an apocalyptic number.

It is an amenable number.

30665125 is a deficient number, since it is larger than the sum of its proper divisors (7605107).

30665125 is an equidigital number, since it uses as much as digits as its factorization.

30665125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245336 (or 245326 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 30665125 is about 5537.6100440533. The cubic root of 30665125 is about 313.0028171923.

The spelling of 30665125 in words is "thirty million, six hundred sixty-five thousand, one hundred twenty-five".