18350025 has 12 divisors (see below), whose sum is σ = 30338832. Its totient is φ = 9786640.

The previous prime is 18350023. The next prime is 18350063. The reversal of 18350025 is 52005381.

It is not a de Polignac number, because 18350025 - 2¹ = 18350023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18349977 and 18350004.

It is not an unprimeable number, because it can be changed into a prime (18350023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 122259 + ... + 122408.

It is an arithmetic number, because the mean of its divisors is an integer number (2528236).

Almost surely, 2^18350025 is an apocalyptic number.

18350025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18350025 is a deficient number, since it is larger than the sum of its proper divisors (11988807).

18350025 is a wasteful number, since it uses less digits than its factorization.

18350025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244680 (or 244675 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 18350025 is about 4283.6929161647. The cubic root of 18350025 is about 263.7619956659.

The spelling of 18350025 in words is "eighteen million, three hundred fifty thousand, twenty-five".