1105121025 has 36 divisors (see below), whose sum is σ = 1997598460. Its totient is φ = 583977600.

The previous prime is 1105120999. The next prime is 1105121063. The reversal of 1105121025 is 5201215011.

It can be written as a sum of positive squares in 6 ways, for example, as 46009089 + 1059111936 = 6783^2 + 32544^2 .

It is not a de Polignac number, because 1105121025 - 2⁵ = 1105120993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1105120989 and 1105121007.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1995 + ... + 47055.

Almost surely, 2^1105121025 is an apocalyptic number.

1105121025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1105121025 is a deficient number, since it is larger than the sum of its proper divisors (892477435).

1105121025 is a wasteful number, since it uses less digits than its factorization.

1105121025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45186 (or 45178 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

The square root of 1105121025 is about 33243.3606153169. The cubic root of 1105121025 is about 1033.8795548392.

Adding to 1105121025 its reverse (5201215011), we get a palindrome (6306336036).

The spelling of 1105121025 in words is "one billion, one hundred five million, one hundred twenty-one thousand, twenty-five".