11715825 has 36 divisors (see below), whose sum is σ = 21307664. Its totient is φ = 5676000.

The previous prime is 11715817. The next prime is 11715827. The reversal of 11715825 is 52851711.

11715825 = T₁₄₅₄ + T₁₄₅₅ + ... + T₁₄₆₄.

11715825 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11715825 - 2³ = 11715817 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11715792 and 11715801.

It is not an unprimeable number, because it can be changed into a prime (11715827) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 8430 + ... + 9720.

Almost surely, 2^11715825 is an apocalyptic number.

11715825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11715825 is a deficient number, since it is larger than the sum of its proper divisors (9591839).

11715825 is a wasteful number, since it uses less digits than its factorization.

11715825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1326 (or 1310 counting only the distinct ones).

The product of its digits is 2800, while the sum is 30.

The square root of 11715825 is about 3422.8387341504. The cubic root of 11715825 is about 227.1211744773.

It can be divided in two parts, 1171 and 5825, that added together give a palindrome (6996).

The spelling of 11715825 in words is "eleven million, seven hundred fifteen thousand, eight hundred twenty-five".