1265650534772 has 12 divisors (see below), whose sum is σ = 2385264469476. Its totient is φ = 584146400640.

The previous prime is 1265650534721. The next prime is 1265650534777. The reversal of 1265650534772 is 2774350565621.

It can be written as a sum of positive squares in 2 ways, for example, as 848856339556 + 416794195216 = 921334^2 + 645596^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1265650534777) 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, 12169716629 + ... + 12169716732.

It is an arithmetic number, because the mean of its divisors is an integer number (198772039123).

Almost surely, 2^{1265650534772} is an apocalyptic number.

It is an amenable number.

1265650534772 is a deficient number, since it is larger than the sum of its proper divisors (1119613934704).

1265650534772 is a wasteful number, since it uses less digits than its factorization.

1265650534772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24339433378 (or 24339433376 counting only the distinct ones).

The product of its (nonzero) digits is 10584000, while the sum is 53.

The spelling of 1265650534772 in words is "one trillion, two hundred sixty-five billion, six hundred fifty million, five hundred thirty-four thousand, seven hundred seventy-two".