11172825 has 72 divisors (see below), whose sum is σ = 22284288. Its totient is φ = 5322240.

The previous prime is 11172823. The next prime is 11172829. The reversal of 11172825 is 52827111.

It is not a de Polignac number, because 11172825 - 2¹ = 11172823 is a prime.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (11172823) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 87912 + ... + 88038.

It is an arithmetic number, because the mean of its divisors is an integer number (309504).

Almost surely, 2^11172825 is an apocalyptic number.

11172825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11172825 is a deficient number, since it is larger than the sum of its proper divisors (11111463).

11172825 is a wasteful number, since it uses less digits than its factorization.

11172825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183 (or 175 counting only the distinct ones).

The product of its digits is 1120, while the sum is 27.

The square root of 11172825 is about 3342.5775982017. The cubic root of 11172825 is about 223.5566872710.

Adding to 11172825 its reverse (52827111), we get a palindrome (63999936).

The spelling of 11172825 in words is "eleven million, one hundred seventy-two thousand, eight hundred twenty-five".