18058825 has 6 divisors (see below), whose sum is σ = 22392974. Its totient is φ = 14447040.

The previous prime is 18058823. The next prime is 18058829. The reversal of 18058825 is 52885081.

It can be written as a sum of positive squares in 3 ways, for example, as 5363856 + 12694969 = 2316^2 + 3563^2 .

It is not a de Polignac number, because 18058825 - 2¹ = 18058823 is a prime.

It is a super-2 number, since 2×18058825² = 652242320761250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18058823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 361152 + ... + 361201.

Almost surely, 2^18058825 is an apocalyptic number.

It is an amenable number.

18058825 is a deficient number, since it is larger than the sum of its proper divisors (4334149).

18058825 is an equidigital number, since it uses as much as digits as its factorization.

18058825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722363 (or 722358 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 37.

The square root of 18058825 is about 4249.5676250649. The cubic root of 18058825 is about 262.3593199333.

The spelling of 18058825 in words is "eighteen million, fifty-eight thousand, eight hundred twenty-five".