18265081250 has 96 divisors (see below), whose sum is σ = 37671588864. Its totient is φ = 6599160000.

The previous prime is 18265081243. The next prime is 18265081259. The reversal of 18265081250 is 5218056281.

It is a super-2 number, since 2×18265081250² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18265081259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3816359 + ... + 3821141.

It is an arithmetic number, because the mean of its divisors is an integer number (392412384).

Almost surely, 2^18265081250 is an apocalyptic number.

18265081250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18265081250 is an abundant number, since it is smaller than the sum of its proper divisors (19406507614).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18265081250 is an equidigital number, since it uses as much as digits as its factorization.

18265081250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4870 (or 4850 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 38.

The spelling of 18265081250 in words is "eighteen billion, two hundred sixty-five million, eighty-one thousand, two hundred fifty".