18275625 has 75 divisors (see below), whose sum is σ = 36004881. Its totient is φ = 9234000.

The previous prime is 18275573. The next prime is 18275633. The reversal of 18275625 is 52657281.

It is a happy number.

The square root of 18275625 is 4275.

It is a perfect power (a square), and thus also a powerful number.

18275625 is a `hidden beast` number, since 1 + 8 + 27 + 5 + 625 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1432809 + 16842816 = 1197^2 + 4104^2 .

It is a tau number, because it is divible by the number of its divisors (75).

It is not a de Polignac number, because 18275625 - 2⁷ = 18275497 is a prime.

Its product of digits (33600) is a multiple of the sum of its prime factors (70).

It is a self number, because there is not a number n which added to its sum of digits gives 18275625.

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 74 ways as a sum of consecutive naturals, for example, 961866 + ... + 961884.

Almost surely, 2^18275625 is an apocalyptic number.

18275625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18275625 is the 4275-th square number.

18275625 is the 2138-th centered octagonal number.

It is an amenable number.

18275625 is a deficient number, since it is larger than the sum of its proper divisors (17729256).

18275625 is an frugal number, since it uses more digits than its factorization.

18275625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70 (or 27 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The cubic root of 18275625 is about 263.4050393129.

Multiplying 18275625 by its sum of digits (36), we get a square (657922500 = 25650²).

The spelling of 18275625 in words is "eighteen million, two hundred seventy-five thousand, six hundred twenty-five".