30072125 has 16 divisors (see below), whose sum is σ = 37879920. Its totient is φ = 23833600.

The previous prime is 30072113. The next prime is 30072137. The reversal of 30072125 is 52127003.

It is an interprime number because it is at equal distance from previous prime (30072113) and next prime (30072137).

It can be written as a sum of positive squares in 8 ways, for example, as 22905796 + 7166329 = 4786^2 + 2677^2 .

It is not a de Polignac number, because 30072125 - 2¹⁰ = 30071101 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30072097 and 30072106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13061 + ... + 15189.

It is an arithmetic number, because the mean of its divisors is an integer number (2367495).

Almost surely, 2^30072125 is an apocalyptic number.

It is an amenable number.

30072125 is a deficient number, since it is larger than the sum of its proper divisors (7807795).

30072125 is a wasteful number, since it uses less digits than its factorization.

30072125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2257 (or 2247 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 30072125 is about 5483.8057040709. The cubic root of 30072125 is about 310.9720614681.

Adding to 30072125 its reverse (52127003), we get a palindrome (82199128).

The spelling of 30072125 in words is "thirty million, seventy-two thousand, one hundred twenty-five".