1805225472 has 120 divisors (see below), whose sum is σ = 5436843984. Its totient is φ = 575545344.

The previous prime is 1805225459. The next prime is 1805225479. The reversal of 1805225472 is 2745225081.

It is a happy number.

1805225472 is a `hidden beast` number, since 1 + 80 + 522 + 54 + 7 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1805225479) 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 11 ways as a sum of consecutive naturals, for example, 97468 + ... + 114500.

Almost surely, 2^1805225472 is an apocalyptic number.

1805225472 is a gapful number since it is divisible by the number (12) 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 1805225472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2718421992).

1805225472 is an abundant number, since it is smaller than the sum of its proper divisors (3631618512).

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

1805225472 is a wasteful number, since it uses less digits than its factorization.

1805225472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17080 (or 17061 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 36.

The square root of 1805225472 is about 42487.9450197347. The cubic root of 1805225472 is about 1217.6163869133.

The spelling of 1805225472 in words is "one billion, eight hundred five million, two hundred twenty-five thousand, four hundred seventy-two".