1100405225 has 6 divisors (see below), whose sum is σ = 1364502510. Its totient is φ = 880324160.

The previous prime is 1100405209. The next prime is 1100405237. The reversal of 1100405225 is 5225040011.

It can be written as a sum of positive squares in 3 ways, for example, as 30591961 + 1069813264 = 5531^2 + 32708^2 .

It is not a de Polignac number, because 1100405225 - 2⁴ = 1100405209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1100405197 and 1100405206.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22008080 + ... + 22008129.

It is an arithmetic number, because the mean of its divisors is an integer number (227417085).

Almost surely, 2^1100405225 is an apocalyptic number.

It is an amenable number.

1100405225 is a deficient number, since it is larger than the sum of its proper divisors (264097285).

1100405225 is an equidigital number, since it uses as much as digits as its factorization.

1100405225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44016219 (or 44016214 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 1100405225 is about 33172.3563377702. The cubic root of 1100405225 is about 1032.4068592001.

Adding to 1100405225 its reverse (5225040011), we get a palindrome (6325445236).

The spelling of 1100405225 in words is "one billion, one hundred million, four hundred five thousand, two hundred twenty-five".