11205225 has 18 divisors (see below), whose sum is σ = 20070206. Its totient is φ = 5976000.

The previous prime is 11205211. The next prime is 11205253. The reversal of 11205225 is 52250211.

It can be written as a sum of positive squares in 3 ways, for example, as 374544 + 10830681 = 612^2 + 3291^2 .

It is not a de Polignac number, because 11205225 - 2⁷ = 11205097 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 11205198 and 11205207.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 24676 + ... + 25125.

Almost surely, 2^11205225 is an apocalyptic number.

11205225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11205225 is a deficient number, since it is larger than the sum of its proper divisors (8864981).

11205225 is a wasteful number, since it uses less digits than its factorization.

11205225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49817 (or 49809 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 11205225 is about 3347.4206487981. The cubic root of 11205225 is about 223.7725755651.

Adding to 11205225 its reverse (52250211), we get a palindrome (63455436).

The spelling of 11205225 in words is "eleven million, two hundred five thousand, two hundred twenty-five".