11287825 has 24 divisors (see below), whose sum is σ = 14874048. Its totient is φ = 8479680.

The previous prime is 11287811. The next prime is 11287831. The reversal of 11287825 is 52878211.

It is not a de Polignac number, because 11287825 - 2⁹ = 11287313 is a prime.

It is a Duffinian number.

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 23 ways as a sum of consecutive naturals, for example, 38379 + ... + 38671.

It is an arithmetic number, because the mean of its divisors is an integer number (619752).

Almost surely, 2^11287825 is an apocalyptic number.

It is an amenable number.

11287825 is a deficient number, since it is larger than the sum of its proper divisors (3586223).

11287825 is a wasteful number, since it uses less digits than its factorization.

11287825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393 (or 388 counting only the distinct ones).

The product of its digits is 8960, while the sum is 34.

The square root of 11287825 is about 3359.7358527122. The cubic root of 11287825 is about 224.3210810505.

The spelling of 11287825 in words is "eleven million, two hundred eighty-seven thousand, eight hundred twenty-five".