18605525 has 6 divisors (see below), whose sum is σ = 23070882. Its totient is φ = 14884400.

The previous prime is 18605519. The next prime is 18605569. The reversal of 18605525 is 52550681.

It can be written as a sum of positive squares in 3 ways, for example, as 568516 + 18037009 = 754^2 + 4247^2 .

It is not a de Polignac number, because 18605525 - 2¹⁴ = 18589141 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 18605491 and 18605500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 372086 + ... + 372135.

It is an arithmetic number, because the mean of its divisors is an integer number (3845147).

Almost surely, 2^18605525 is an apocalyptic number.

It is an amenable number.

18605525 is a deficient number, since it is larger than the sum of its proper divisors (4465357).

18605525 is an equidigital number, since it uses as much as digits as its factorization.

18605525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744231 (or 744226 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 32.

The square root of 18605525 is about 4313.4122223595. The cubic root of 18605525 is about 264.9805373151.

The spelling of 18605525 in words is "eighteen million, six hundred five thousand, five hundred twenty-five".