30123125 has 10 divisors (see below), whose sum is σ = 37642638. Its totient is φ = 24098000.

The previous prime is 30123109. The next prime is 30123139. The reversal of 30123125 is 52132103.

It can be written as a sum of positive squares in 5 ways, for example, as 7150276 + 22972849 = 2674^2 + 4793^2 .

It is not a de Polignac number, because 30123125 - 2⁴ = 30123109 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 9 ways as a sum of consecutive naturals, for example, 23474 + ... + 24723.

Almost surely, 2^30123125 is an apocalyptic number.

It is an amenable number.

30123125 is a deficient number, since it is larger than the sum of its proper divisors (7519513).

30123125 is an frugal number, since it uses more digits than its factorization.

30123125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48217 (or 48202 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 30123125 is about 5488.4537895477. The cubic root of 30123125 is about 311.1477570448.

Adding to 30123125 its reverse (52132103), we get a palindrome (82255228).

The spelling of 30123125 in words is "thirty million, one hundred twenty-three thousand, one hundred twenty-five".