18825473 has 4 divisors (see below), whose sum is σ = 19001520. Its totient is φ = 18649428.

The previous prime is 18825451. The next prime is 18825493. The reversal of 18825473 is 37452881.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37452881 = 3923 ⋅9547.

It is a cyclic number.

It is not a de Polignac number, because 18825473 - 2⁸ = 18825217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18825493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87863 + ... + 88076.

It is an arithmetic number, because the mean of its divisors is an integer number (4750380).

Almost surely, 2^18825473 is an apocalyptic number.

It is an amenable number.

18825473 is a deficient number, since it is larger than the sum of its proper divisors (176047).

18825473 is a wasteful number, since it uses less digits than its factorization.

18825473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176046.

The product of its digits is 53760, while the sum is 38.

The square root of 18825473 is about 4338.8331380683. The cubic root of 18825473 is about 266.0206185612.

The spelling of 18825473 in words is "eighteen million, eight hundred twenty-five thousand, four hundred seventy-three".