612225611 has 2 divisors, whose sum is σ = 612225612. Its totient is φ = 612225610.

The previous prime is 612225599. The next prime is 612225613. The reversal of 612225611 is 116522216.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-612225611 is a prime.

It is a Sophie Germain prime.

Together with 612225613, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (612225613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306112805 + 306112806.

It is an arithmetic number, because the mean of its divisors is an integer number (306112806).

Almost surely, 2^612225611 is an apocalyptic number.

612225611 is a deficient number, since it is larger than the sum of its proper divisors (1).

612225611 is an equidigital number, since it uses as much as digits as its factorization.

612225611 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 26.

The square root of 612225611 is about 24743.1932256126. The cubic root of 612225611 is about 849.1227909855.

Adding to 612225611 its reverse (116522216), we get a palindrome (728747827).

The spelling of 612225611 in words is "six hundred twelve million, two hundred twenty-five thousand, six hundred eleven".