11881225 has 12 divisors (see below), whose sum is σ = 15374016. Its totient is φ = 9091280.

The previous prime is 11881223. The next prime is 11881237. The reversal of 11881225 is 52218811.

It is not a de Polignac number, because 11881225 - 2¹ = 11881223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11881193 and 11881202.

It is not an unprimeable number, because it can be changed into a prime (11881223) 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 11 ways as a sum of consecutive naturals, for example, 9757 + ... + 10906.

It is an arithmetic number, because the mean of its divisors is an integer number (1281168).

Almost surely, 2^11881225 is an apocalyptic number.

It is an amenable number.

11881225 is a deficient number, since it is larger than the sum of its proper divisors (3492791).

11881225 is a wasteful number, since it uses less digits than its factorization.

11881225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20696 (or 20691 counting only the distinct ones).

The product of its digits is 1280, while the sum is 28.

The square root of 11881225 is about 3446.9152876159. The cubic root of 11881225 is about 228.1849901653.

It can be divided in two parts, 11881 and 225, that multiplied together give a square (2673225 = 1635²).

The spelling of 11881225 in words is "eleven million, eight hundred eighty-one thousand, two hundred twenty-five".