11280825 has 36 divisors (see below), whose sum is σ = 20390188. Its totient is φ = 5961600.

The previous prime is 11280817. The next prime is 11280881. The reversal of 11280825 is 52808211.

It can be written as a sum of positive squares in 6 ways, for example, as 4247721 + 7033104 = 2061^2 + 2652^2 .

It is not a de Polignac number, because 11280825 - 2³ = 11280817 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 40587 + ... + 40863.

Almost surely, 2^11280825 is an apocalyptic number.

11280825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11280825 is a deficient number, since it is larger than the sum of its proper divisors (9109363).

11280825 is a wasteful number, since it uses less digits than its factorization.

11280825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474 (or 466 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 11280825 is about 3358.6939425914. The cubic root of 11280825 is about 224.2747015142.

The spelling of 11280825 in words is "eleven million, two hundred eighty thousand, eight hundred twenty-five".