19128925 has 12 divisors (see below), whose sum is σ = 23944896. Its totient is φ = 15158000.

The previous prime is 19128913. The next prime is 19128931. The reversal of 19128925 is 52982191.

It is not a de Polignac number, because 19128925 - 2⁹ = 19128413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 901 + ... + 6250.

It is an arithmetic number, because the mean of its divisors is an integer number (1995408).

Almost surely, 2^19128925 is an apocalyptic number.

It is an amenable number.

19128925 is a deficient number, since it is larger than the sum of its proper divisors (4815971).

19128925 is a wasteful number, since it uses less digits than its factorization.

19128925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7268 (or 7263 counting only the distinct ones).

The product of its digits is 12960, while the sum is 37.

The square root of 19128925 is about 4373.6626527431. The cubic root of 19128925 is about 267.4423551800.

The spelling of 19128925 in words is "nineteen million, one hundred twenty-eight thousand, nine hundred twenty-five".