30019925 has 12 divisors (see below), whose sum is σ = 40088580. Its totient is φ = 22168320.

The previous prime is 30019903. The next prime is 30019931. The reversal of 30019925 is 52991003.

It can be written as a sum of positive squares in 6 ways, for example, as 2289169 + 27730756 = 1513^2 + 5266^2 .

It is not a de Polignac number, because 30019925 - 2⁶ = 30019861 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45860 + ... + 46509.

It is an arithmetic number, because the mean of its divisors is an integer number (3340715).

Almost surely, 2^30019925 is an apocalyptic number.

It is an amenable number.

30019925 is a deficient number, since it is larger than the sum of its proper divisors (10068655).

30019925 is a wasteful number, since it uses less digits than its factorization.

30019925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92392 (or 92387 counting only the distinct ones).

The product of its (nonzero) digits is 2430, while the sum is 29.

The square root of 30019925 is about 5479.0441684659. The cubic root of 30019925 is about 310.7920260467.

The spelling of 30019925 in words is "thirty million, nineteen thousand, nine hundred twenty-five".