18225057 has 16 divisors (see below), whose sum is σ = 25075008. Its totient is φ = 11768640.

The previous prime is 18225043. The next prime is 18225059. The reversal of 18225057 is 75052281.

It is not a de Polignac number, because 18225057 - 2⁷ = 18224929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18225059) 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 15 ways as a sum of consecutive naturals, for example, 12507 + ... + 13887.

It is an arithmetic number, because the mean of its divisors is an integer number (1567188).

Almost surely, 2^18225057 is an apocalyptic number.

It is an amenable number.

18225057 is a deficient number, since it is larger than the sum of its proper divisors (6849951).

18225057 is a wasteful number, since it uses less digits than its factorization.

18225057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1520.

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 18225057 is about 4269.0815171416. The cubic root of 18225057 is about 263.1618707912.

The spelling of 18225057 in words is "eighteen million, two hundred twenty-five thousand, fifty-seven".