11521025 has 6 divisors (see below), whose sum is σ = 14286102. Its totient is φ = 9216800.

The previous prime is 11521021. The next prime is 11521031. The reversal of 11521025 is 52012511.

It can be written as a sum of positive squares in 3 ways, for example, as 238144 + 11282881 = 488^2 + 3359^2 .

It is not a de Polignac number, because 11521025 - 2² = 11521021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11520994 and 11521012.

It is not an unprimeable number, because it can be changed into a prime (11521021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 230396 + ... + 230445.

It is an arithmetic number, because the mean of its divisors is an integer number (2381017).

Almost surely, 2^11521025 is an apocalyptic number.

It is an amenable number.

11521025 is a deficient number, since it is larger than the sum of its proper divisors (2765077).

11521025 is an equidigital number, since it uses as much as digits as its factorization.

11521025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460851 (or 460846 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 11521025 is about 3394.2635430974. The cubic root of 11521025 is about 225.8553450795.

Adding to 11521025 its reverse (52012511), we get a palindrome (63533536).

The spelling of 11521025 in words is "eleven million, five hundred twenty-one thousand, twenty-five".