1265671226 has 16 divisors (see below), whose sum is σ = 1934528424. Its totient is φ = 620918784.

The previous prime is 1265671207. The next prime is 1265671261. The reversal of 1265671226 is 6221765621.

It can be written as a sum of positive squares in 4 ways, for example, as 729054001 + 536617225 = 27001^2 + 23165^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1265671226.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5720 + ... + 50636.

Almost surely, 2^1265671226 is an apocalyptic number.

1265671226 is a deficient number, since it is larger than the sum of its proper divisors (668857198).

1265671226 is a wasteful number, since it uses less digits than its factorization.

1265671226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45185.

The product of its digits is 60480, while the sum is 38.

The square root of 1265671226 is about 35576.2733573937. The cubic root of 1265671226 is about 1081.7003468401.

The spelling of 1265671226 in words is "one billion, two hundred sixty-five million, six hundred seventy-one thousand, two hundred twenty-six".