11681325 has 36 divisors (see below), whose sum is σ = 21109140. Its totient is φ = 6174720.

The previous prime is 11681323. The next prime is 11681347. The reversal of 11681325 is 52318611.

It can be written as a sum of positive squares in 6 ways, for example, as 3090564 + 8590761 = 1758^2 + 2931^2 .

It is not a de Polignac number, because 11681325 - 2¹ = 11681323 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11681323) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 43291 + ... + 43559.

It is an arithmetic number, because the mean of its divisors is an integer number (586365).

Almost surely, 2^11681325 is an apocalyptic number.

11681325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11681325 is a deficient number, since it is larger than the sum of its proper divisors (9427815).

11681325 is a wasteful number, since it uses less digits than its factorization.

11681325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478 (or 470 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 11681325 is about 3417.7953420297. The cubic root of 11681325 is about 226.8980180639.

Adding to 11681325 its reverse (52318611), we get a palindrome (63999936).

The spelling of 11681325 in words is "eleven million, six hundred eighty-one thousand, three hundred twenty-five".