770225009 has 2 divisors, whose sum is σ = 770225010. Its totient is φ = 770225008.

The previous prime is 770224981. The next prime is 770225011. The reversal of 770225009 is 900522077.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 769507600 + 717409 = 27740^2 + 847^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-770225009 is a prime.

Together with 770225011, 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 (770255009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 385112504 + 385112505.

It is an arithmetic number, because the mean of its divisors is an integer number (385112505).

Almost surely, 2^770225009 is an apocalyptic number.

It is an amenable number.

770225009 is a deficient number, since it is larger than the sum of its proper divisors (1).

770225009 is an equidigital number, since it uses as much as digits as its factorization.

770225009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8820, while the sum is 32.

The square root of 770225009 is about 27752.9279356251. The cubic root of 770225009 is about 916.6549161836.

The spelling of 770225009 in words is "seven hundred seventy million, two hundred twenty-five thousand, nine".