1265706223 has 8 divisors (see below), whose sum is σ = 1375301120. Its totient is φ = 1160409240.

The previous prime is 1265706209. The next prime is 1265706229. The reversal of 1265706223 is 3226075621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1265706223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1265706229) 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 in 7 ways as a sum of consecutive naturals, for example, 1073865 + ... + 1075042.

It is an arithmetic number, because the mean of its divisors is an integer number (171912640).

Almost surely, 2^1265706223 is an apocalyptic number.

1265706223 is a deficient number, since it is larger than the sum of its proper divisors (109594897).

1265706223 is a wasteful number, since it uses less digits than its factorization.

1265706223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2148957.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 1265706223 is about 35576.7652127059. The cubic root of 1265706223 is about 1081.7103167589.

The spelling of 1265706223 in words is "one billion, two hundred sixty-five million, seven hundred six thousand, two hundred twenty-three".