18225801673500 has 192 divisors, whose sum is σ = 53214527149056. Its totient is φ = 4847311456000.

The previous prime is 18225801673487. The next prime is 18225801673543. The reversal of 18225801673500 is 537610852281.

It is a self number, because there is not a number n which added to its sum of digits gives 18225801673500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2598855994 + ... + 2598863006.

It is an arithmetic number, because the mean of its divisors is an integer number (277158995568).

Almost surely, 2^{18225801673500} is an apocalyptic number.

18225801673500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18225801673500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26607263574528).

18225801673500 is an abundant number, since it is smaller than the sum of its proper divisors (34988725475556).

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

18225801673500 is a wasteful number, since it uses less digits than its factorization.

18225801673500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11389 (or 11377 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 48.

The spelling of 18225801673500 in words is "eighteen trillion, two hundred twenty-five billion, eight hundred one million, six hundred seventy-three thousand, five hundred".