11281525 has 12 divisors (see below), whose sum is σ = 14043744. Its totient is φ = 8990000.

The previous prime is 11281513. The next prime is 11281531. The reversal of 11281525 is 52518211.

It is not a de Polignac number, because 11281525 - 2¹³ = 11273333 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11281525.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 7050 + ... + 8500.

It is an arithmetic number, because the mean of its divisors is an integer number (1170312).

Almost surely, 2^11281525 is an apocalyptic number.

It is an amenable number.

11281525 is a deficient number, since it is larger than the sum of its proper divisors (2762219).

11281525 is a wasteful number, since it uses less digits than its factorization.

11281525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1772 (or 1767 counting only the distinct ones).

The product of its digits is 800, while the sum is 25.

The square root of 11281525 is about 3358.7981481476. The cubic root of 11281525 is about 224.2793403311.

Adding to 11281525 its reverse (52518211), we get a palindrome (63799736).

The spelling of 11281525 in words is "eleven million, two hundred eighty-one thousand, five hundred twenty-five".