11581825 has 12 divisors (see below), whose sum is σ = 14634108. Its totient is φ = 9089600.

The previous prime is 11581807. The next prime is 11581853. The reversal of 11581825 is 52818511.

It can be written as a sum of positive squares in 6 ways, for example, as 452929 + 11128896 = 673^2 + 3336^2 .

It is not a de Polignac number, because 11581825 - 2⁵ = 11581793 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 3046 + ... + 5695.

It is an arithmetic number, because the mean of its divisors is an integer number (1219509).

Almost surely, 2^11581825 is an apocalyptic number.

It is an amenable number.

11581825 is a deficient number, since it is larger than the sum of its proper divisors (3052283).

11581825 is an equidigital number, since it uses as much as digits as its factorization.

11581825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8804 (or 8799 counting only the distinct ones).

The product of its digits is 3200, while the sum is 31.

The square root of 11581825 is about 3403.2080453596. The cubic root of 11581825 is about 226.2519509818.

The spelling of 11581825 in words is "eleven million, five hundred eighty-one thousand, eight hundred twenty-five".