11311225 has 12 divisors (see below), whose sum is σ = 14075116. Its totient is φ = 9017280.

The previous prime is 11311219. The next prime is 11311231. The reversal of 11311225 is 52211311.

11311225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11311219) and next prime (11311231).

It can be written as a sum of positive squares in 6 ways, for example, as 1806336 + 9504889 = 1344^2 + 3083^2 .

It is not a de Polignac number, because 11311225 - 2³ = 11311217 is a prime.

It is a super-2 number, since 2×11311225² = 255887622001250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11311199 and 11311208.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8719 + ... + 9931.

Almost surely, 2^11311225 is an apocalyptic number.

It is an amenable number.

11311225 is a deficient number, since it is larger than the sum of its proper divisors (2763891).

11311225 is a wasteful number, since it uses less digits than its factorization.

11311225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1596 (or 1591 counting only the distinct ones).

The product of its digits is 60, while the sum is 16.

The square root of 11311225 is about 3363.2164664202. The cubic root of 11311225 is about 224.4759821727.

Adding to 11311225 its reverse (52211311), we get a palindrome (63522536).

The spelling of 11311225 in words is "eleven million, three hundred eleven thousand, two hundred twenty-five".