18248725 has 12 divisors (see below), whose sum is σ = 24685920. Its totient is φ = 13271600.

The previous prime is 18248719. The next prime is 18248749. The reversal of 18248725 is 52784281.

It is not a de Polignac number, because 18248725 - 2⁷ = 18248597 is a prime.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 32905 + ... + 33454.

It is an arithmetic number, because the mean of its divisors is an integer number (2057160).

Almost surely, 2^18248725 is an apocalyptic number.

It is an amenable number.

18248725 is a deficient number, since it is larger than the sum of its proper divisors (6437195).

18248725 is a wasteful number, since it uses less digits than its factorization.

18248725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66380 (or 66375 counting only the distinct ones).

The product of its digits is 35840, while the sum is 37.

The square root of 18248725 is about 4271.8526425896. The cubic root of 18248725 is about 263.2757400441.

The spelling of 18248725 in words is "eighteen million, two hundred forty-eight thousand, seven hundred twenty-five".