1825281800 has 48 divisors (see below), whose sum is σ = 4251403860. Its totient is φ = 728801280.

The previous prime is 1825281793. The next prime is 1825281839. The reversal of 1825281800 is 81825281.

It can be written as a sum of positive squares in 6 ways, for example, as 1609132996 + 216148804 = 40114^2 + 14702^2 .

It is a super-2 number, since 2×1825281800² = 6663307298822480000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 107492 + ... + 123308.

Almost surely, 2^1825281800 is an apocalyptic number.

1825281800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1825281800 is an abundant number, since it is smaller than the sum of its proper divisors (2426122060).

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

1825281800 is a wasteful number, since it uses less digits than its factorization.

1825281800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16410 (or 16401 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 35.

The square root of 1825281800 is about 42723.3168188052. The cubic root of 1825281800 is about 1222.1090902938.

The spelling of 1825281800 in words is "one billion, eight hundred twenty-five million, two hundred eighty-one thousand, eight hundred".