1225131105 has 16 divisors (see below), whose sum is σ = 2138410944. Its totient is φ = 594002880.

The previous prime is 1225131053. The next prime is 1225131107. The reversal of 1225131105 is 5011315221.

It is not a de Polignac number, because 1225131105 - 2¹⁴ = 1225114721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1225131107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3712354 + ... + 3712683.

It is an arithmetic number, because the mean of its divisors is an integer number (133650684).

Almost surely, 2^1225131105 is an apocalyptic number.

1225131105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1225131105 is a deficient number, since it is larger than the sum of its proper divisors (913279839).

1225131105 is a wasteful number, since it uses less digits than its factorization.

1225131105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7425056.

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 1225131105 is about 35001.8728784618. The cubic root of 1225131105 is about 1070.0256508248.

Adding to 1225131105 its reverse (5011315221), we get a palindrome (6236446326).

The spelling of 1225131105 in words is "one billion, two hundred twenty-five million, one hundred thirty-one thousand, one hundred five".