11975825 has 12 divisors (see below), whose sum is σ = 15095388. Its totient is φ = 9422400.

The previous prime is 11975819. The next prime is 11975849. The reversal of 11975825 is 52857911.

It can be written as a sum of positive squares in 6 ways, for example, as 5740816 + 6235009 = 2396^2 + 2497^2 .

It is not a de Polignac number, because 11975825 - 2⁴ = 11975809 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 (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2402 + ... + 5451.

It is an arithmetic number, because the mean of its divisors is an integer number (1257949).

Almost surely, 2^11975825 is an apocalyptic number.

It is an amenable number.

11975825 is a deficient number, since it is larger than the sum of its proper divisors (3119563).

11975825 is an equidigital number, since it uses as much as digits as its factorization.

11975825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7924 (or 7919 counting only the distinct ones).

The product of its digits is 25200, while the sum is 38.

The square root of 11975825 is about 3460.6104952739. The cubic root of 11975825 is about 228.7890036710.

The spelling of 11975825 in words is "eleven million, nine hundred seventy-five thousand, eight hundred twenty-five".