1265285276 has 12 divisors (see below), whose sum is σ = 2214509808. Its totient is φ = 632568192.

The previous prime is 1265285239. The next prime is 1265285279. The reversal of 1265285276 is 6725825621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1265285279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40460 + ... + 64556.

It is an arithmetic number, because the mean of its divisors is an integer number (184542484).

Almost surely, 2^1265285276 is an apocalyptic number.

It is an amenable number.

1265285276 is a deficient number, since it is larger than the sum of its proper divisors (949224532).

1265285276 is a wasteful number, since it uses less digits than its factorization.

1265285276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37228 (or 37226 counting only the distinct ones).

The product of its digits is 403200, while the sum is 44.

The square root of 1265285276 is about 35570.8486825940. The cubic root of 1265285276 is about 1081.5903855055.

The spelling of 1265285276 in words is "one billion, two hundred sixty-five million, two hundred eighty-five thousand, two hundred seventy-six".