1825280 has 80 divisors (see below), whose sum is σ = 4713984. Its totient is φ = 675840.

The previous prime is 1825277. The next prime is 1825297. The reversal of 1825280 is 825281.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58865 + ... + 58895.

2^1825280 is an apocalyptic number.

1825280 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 1825280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2356992).

1825280 is an abundant number, since it is smaller than the sum of its proper divisors (2888704).

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

1825280 is an equidigital number, since it uses as much as digits as its factorization.

1825280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77 (or 61 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 1825280 is about 1351.0292372854. The cubic root of 1825280 is about 122.2108688566.

Subtracting from 1825280 its reverse (825281), we obtain a palindrome (999999).

The spelling of 1825280 in words is "one million, eight hundred twenty-five thousand, two hundred eighty".