11225155 has 4 divisors (see below), whose sum is σ = 13470192. Its totient is φ = 8980120.

The previous prime is 11225129. The next prime is 11225161. The reversal of 11225155 is 55152211.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 11225155 - 2²¹ = 9128003 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1122511 + ... + 1122520.

It is an arithmetic number, because the mean of its divisors is an integer number (3367548).

Almost surely, 2^11225155 is an apocalyptic number.

11225155 is a deficient number, since it is larger than the sum of its proper divisors (2245037).

11225155 is an equidigital number, since it uses as much as digits as its factorization.

11225155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2245036.

The product of its digits is 500, while the sum is 22.

The square root of 11225155 is about 3350.3962452223. The cubic root of 11225155 is about 223.9051668616.

Adding to 11225155 its reverse (55152211), we get a palindrome (66377366).

The spelling of 11225155 in words is "eleven million, two hundred twenty-five thousand, one hundred fifty-five".