30888925 has 12 divisors (see below), whose sum is σ = 38447316. Its totient is φ = 24617600.

The previous prime is 30888911. The next prime is 30888929. The reversal of 30888925 is 52988803.

It can be written as a sum of positive squares in 6 ways, for example, as 119716 + 30769209 = 346^2 + 5547^2 .

It is not a de Polignac number, because 30888925 - 2⁹ = 30888413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30888929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4827 + ... + 9223.

It is an arithmetic number, because the mean of its divisors is an integer number (3203943).

Almost surely, 2^30888925 is an apocalyptic number.

It is an amenable number.

30888925 is a deficient number, since it is larger than the sum of its proper divisors (7558391).

30888925 is a wasteful number, since it uses less digits than its factorization.

30888925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4688 (or 4683 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 43.

The square root of 30888925 is about 5557.7805822109. The cubic root of 30888925 is about 313.7624239140.

It can be divided in two parts, 30888 and 925, that added together give a palindrome (31813).

The spelling of 30888925 in words is "thirty million, eight hundred eighty-eight thousand, nine hundred twenty-five".