11525015 has 4 divisors (see below), whose sum is σ = 13830024. Its totient is φ = 9220008.

The previous prime is 11524999. The next prime is 11525023. The reversal of 11525015 is 51052511.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11525015 - 2⁴ = 11524999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 1152497 + ... + 1152506.

It is an arithmetic number, because the mean of its divisors is an integer number (3457506).

Almost surely, 2^11525015 is an apocalyptic number.

11525015 is a deficient number, since it is larger than the sum of its proper divisors (2305009).

11525015 is an equidigital number, since it uses as much as digits as its factorization.

11525015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2305008.

The product of its (nonzero) digits is 250, while the sum is 20.

The square root of 11525015 is about 3394.8512485822. The cubic root of 11525015 is about 225.8814150636.

Adding to 11525015 its reverse (51052511), we get a palindrome (62577526).

The spelling of 11525015 in words is "eleven million, five hundred twenty-five thousand, fifteen".