1800735225 has 12 divisors (see below), whose sum is σ = 2977215696. Its totient is φ = 960392080.

The previous prime is 1800735221. The next prime is 1800735239. The reversal of 1800735225 is 5225370081.

It is not a de Polignac number, because 1800735225 - 2² = 1800735221 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1800735221) 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, 12004827 + ... + 12004976.

It is an arithmetic number, because the mean of its divisors is an integer number (248101308).

Almost surely, 2^1800735225 is an apocalyptic number.

1800735225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1800735225 is a deficient number, since it is larger than the sum of its proper divisors (1176480471).

1800735225 is a wasteful number, since it uses less digits than its factorization.

1800735225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24009816 (or 24009811 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 1800735225 is about 42435.0706963002. The cubic root of 1800735225 is about 1216.6059983093.

The spelling of 1800735225 in words is "one billion, eight hundred million, seven hundred thirty-five thousand, two hundred twenty-five".