30219125 has 24 divisors (see below), whose sum is σ = 39510744. Its totient is φ = 23073600.

The previous prime is 30219113. The next prime is 30219157. The reversal of 30219125 is 52191203.

It can be written as a sum of positive squares in 4 ways, for example, as 2116 + 30217009 = 46^2 + 5497^2 .

It is not a de Polignac number, because 30219125 - 2⁴ = 30219109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30219125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65897 + ... + 66353.

It is an arithmetic number, because the mean of its divisors is an integer number (1646281).

Almost surely, 2^30219125 is an apocalyptic number.

It is an amenable number.

30219125 is a deficient number, since it is larger than the sum of its proper divisors (9291619).

30219125 is an equidigital number, since it uses as much as digits as its factorization.

30219125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518 (or 485 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 30219125 is about 5497.1924652499. The cubic root of 30219125 is about 311.4779409089.

The spelling of 30219125 in words is "thirty million, two hundred nineteen thousand, one hundred twenty-five".