11122225 has 27 divisors (see below), whose sum is σ = 14931553. Its totient is φ = 8217440.

The previous prime is 11122219. The next prime is 11122229. The reversal of 11122225 is 52222111.

It is a happy number.

The square root of 11122225 is 3335.

It is a perfect power (a square), and thus also a powerful number.

11122225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 152881 + 10969344 = 391^2 + 3312^2 .

It is not a de Polignac number, because 11122225 - 2³ = 11122217 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 11122199 and 11122208.

It is not an unprimeable number, because it can be changed into a prime (11122229) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 383511 + ... + 383539.

Almost surely, 2^11122225 is an apocalyptic number.

11122225 is the 3335-th square number.

11122225 is the 1668-th centered octagonal number.

It is an amenable number.

11122225 is a deficient number, since it is larger than the sum of its proper divisors (3809328).

11122225 is an equidigital number, since it uses as much as digits as its factorization.

11122225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114 (or 57 counting only the distinct ones).

The product of its digits is 80, while the sum is 16.

The cubic root of 11122225 is about 223.2186919359.

Multiplying 11122225 by its sum of digits (16), we get a square (177955600 = 13340²).

Adding to 11122225 its reverse (52222111), we get a palindrome (63344336).

It can be divided in two parts, 1112 and 2225, that multiplied together give a triangular number (2474200 = T₂₂₂₄).

The spelling of 11122225 in words is "eleven million, one hundred twenty-two thousand, two hundred twenty-five".