18064625 has 16 divisors (see below), whose sum is σ = 23873616. Its totient is φ = 13600000.

The previous prime is 18064619. The next prime is 18064663. The reversal of 18064625 is 52646081.

It can be written as a sum of positive squares in 8 ways, for example, as 7573504 + 10491121 = 2752^2 + 3239^2 .

It is not a de Polignac number, because 18064625 - 2⁴ = 18064609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18064591 and 18064600.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2126 + ... + 6375.

It is an arithmetic number, because the mean of its divisors is an integer number (1492101).

Almost surely, 2^18064625 is an apocalyptic number.

It is an amenable number.

18064625 is a deficient number, since it is larger than the sum of its proper divisors (5808991).

18064625 is an equidigital number, since it uses as much as digits as its factorization.

18064625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8533 (or 8523 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 18064625 is about 4250.2499926475. The cubic root of 18064625 is about 262.3874044696.

The spelling of 18064625 in words is "eighteen million, sixty-four thousand, six hundred twenty-five".