11525519 has 4 divisors (see below), whose sum is σ = 11533296. Its totient is φ = 11517744.

The previous prime is 11525509. The next prime is 11525543. The reversal of 11525519 is 91552511.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 11525519 - 2⁸ = 11525263 is a prime.

It is a super-2 number, since 2×11525519² = 265675176438722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11525491 and 11525500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11525509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 899 + ... + 4884.

It is an arithmetic number, because the mean of its divisors is an integer number (2883324).

Almost surely, 2^11525519 is an apocalyptic number.

11525519 is a deficient number, since it is larger than the sum of its proper divisors (7777).

11525519 is an equidigital number, since it uses as much as digits as its factorization.

11525519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7776.

The product of its digits is 2250, while the sum is 29.

The square root of 11525519 is about 3394.9254778272. The cubic root of 11525519 is about 225.8847076862.

The spelling of 11525519 in words is "eleven million, five hundred twenty-five thousand, five hundred nineteen".