18575625 has 20 divisors (see below), whose sum is σ = 30952592. Its totient is φ = 9906000.

The previous prime is 18575621. The next prime is 18575629. The reversal of 18575625 is 52657581.

It is an interprime number because it is at equal distance from previous prime (18575621) and next prime (18575629).

It is not a de Polignac number, because 18575625 - 2² = 18575621 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18575621) 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 19 ways as a sum of consecutive naturals, for example, 3079 + ... + 6828.

Almost surely, 2^18575625 is an apocalyptic number.

18575625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18575625 is a deficient number, since it is larger than the sum of its proper divisors (12376967).

18575625 is an frugal number, since it uses more digits than its factorization.

18575625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9930 (or 9915 counting only the distinct ones).

The product of its digits is 84000, while the sum is 39.

The square root of 18575625 is about 4309.9448952394. The cubic root of 18575625 is about 264.8385155943.

The spelling of 18575625 in words is "eighteen million, five hundred seventy-five thousand, six hundred twenty-five".