1225340011 has 6 divisors (see below), whose sum is σ = 1425395580. Its totient is φ = 1050291396.

The previous prime is 1225340009. The next prime is 1225340027. The reversal of 1225340011 is 1100435221.

It is not a de Polignac number, because 1225340011 - 2¹ = 1225340009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1225350011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12503421 + ... + 12503518.

It is an arithmetic number, because the mean of its divisors is an integer number (237565930).

Almost surely, 2^1225340011 is an apocalyptic number.

1225340011 is a deficient number, since it is larger than the sum of its proper divisors (200055569).

1225340011 is an equidigital number, since it uses as much as digits as its factorization.

1225340011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25006953 (or 25006946 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1225340011 is about 35004.8569629987. The cubic root of 1225340011 is about 1070.0864666492.

Adding to 1225340011 its reverse (1100435221), we get a palindrome (2325775232).

The spelling of 1225340011 in words is "one billion, two hundred twenty-five million, three hundred forty thousand, eleven".