11217525 has 24 divisors (see below), whose sum is σ = 20233824. Its totient is φ = 5438400.

The previous prime is 11217523. The next prime is 11217541. The reversal of 11217525 is 52571211.

It is not a de Polignac number, because 11217525 - 2¹ = 11217523 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11217495 and 11217504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11217523) 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 23 ways as a sum of consecutive naturals, for example, 5974 + ... + 7623.

It is an arithmetic number, because the mean of its divisors is an integer number (843076).

Almost surely, 2^11217525 is an apocalyptic number.

11217525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11217525 is a deficient number, since it is larger than the sum of its proper divisors (9016299).

11217525 is a wasteful number, since it uses less digits than its factorization.

11217525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13621 (or 13616 counting only the distinct ones).

The product of its digits is 700, while the sum is 24.

The square root of 11217525 is about 3349.2573803755. The cubic root of 11217525 is about 223.8544241725.

Adding to 11217525 its reverse (52571211), we get a palindrome (63788736).

It can be divided in two parts, 1121 and 7525, that added together give a triangular number (8646 = T₁₃₁).

The spelling of 11217525 in words is "eleven million, two hundred seventeen thousand, five hundred twenty-five".