1105540225 has 12 divisors (see below), whose sum is σ = 1376090496. Its totient is φ = 881064080.

The previous prime is 1105540201. The next prime is 1105540229. The reversal of 1105540225 is 5220455011.

It is not a de Polignac number, because 1105540225 - 2⁵ = 1105540193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1105540225.

It is not an unprimeable number, because it can be changed into a prime (1105540229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77497 + ... + 90646.

It is an arithmetic number, because the mean of its divisors is an integer number (114674208).

Almost surely, 2^1105540225 is an apocalyptic number.

It is an amenable number.

1105540225 is a deficient number, since it is larger than the sum of its proper divisors (270550271).

1105540225 is a wasteful number, since it uses less digits than its factorization.

1105540225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168416 (or 168411 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 1105540225 is about 33249.6650359068. The cubic root of 1105540225 is about 1034.0102637573.

Adding to 1105540225 its reverse (5220455011), we get a palindrome (6325995236).

The spelling of 1105540225 in words is "one billion, one hundred five million, five hundred forty thousand, two hundred twenty-five".