1265223268 has 12 divisors (see below), whose sum is σ = 2261250432. Its totient is φ = 619151720.

The previous prime is 1265223257. The next prime is 1265223287. The reversal of 1265223268 is 8623225621.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3364768 + ... + 3365143.

It is an arithmetic number, because the mean of its divisors is an integer number (188437536).

Almost surely, 2^1265223268 is an apocalyptic number.

It is an amenable number.

1265223268 is a deficient number, since it is larger than the sum of its proper divisors (996027164).

1265223268 is a wasteful number, since it uses less digits than its factorization.

1265223268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6729962 (or 6729960 counting only the distinct ones).

The product of its digits is 69120, while the sum is 37.

The square root of 1265223268 is about 35569.9770593123. The cubic root of 1265223268 is about 1081.5727166700.

Adding to 1265223268 its reverse (8623225621), we get a palindrome (9888448889).

The spelling of 1265223268 in words is "one billion, two hundred sixty-five million, two hundred twenty-three thousand, two hundred sixty-eight".