1210225769 has 2 divisors, whose sum is σ = 1210225770. Its totient is φ = 1210225768.

The previous prime is 1210225763. The next prime is 1210225811. The reversal of 1210225769 is 9675220121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 967956544 + 242269225 = 31112^2 + 15565^2 .

It is a cyclic number.

It is not a de Polignac number, because 1210225769 - 2²⁸ = 941790313 is a prime.

It is a super-2 number, since 2×1210225769² = 2929292823903282722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1210225763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605112884 + 605112885.

It is an arithmetic number, because the mean of its divisors is an integer number (605112885).

Almost surely, 2^1210225769 is an apocalyptic number.

It is an amenable number.

1210225769 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210225769 is an equidigital number, since it uses as much as digits as its factorization.

1210225769 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 1210225769 is about 34788.2993116939. The cubic root of 1210225769 is about 1065.6685081137.

The spelling of 1210225769 in words is "one billion, two hundred ten million, two hundred twenty-five thousand, seven hundred sixty-nine".