1265305868422 has 48 divisors (see below), whose sum is σ = 2066135591520. Its totient is φ = 580693017600.

The previous prime is 1265305868419. The next prime is 1265305868423. The reversal of 1265305868422 is 2248685035621.

It is a self number, because there is not a number n which added to its sum of digits gives 1265305868422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1265305868423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72957472 + ... + 72974812.

It is an arithmetic number, because the mean of its divisors is an integer number (43044491490).

Almost surely, 2^{1265305868422} is an apocalyptic number.

1265305868422 is a deficient number, since it is larger than the sum of its proper divisors (800829723098).

1265305868422 is a wasteful number, since it uses less digits than its factorization.

1265305868422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20497 (or 20480 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 52.

The spelling of 1265305868422 in words is "one trillion, two hundred sixty-five billion, three hundred five million, eight hundred sixty-eight thousand, four hundred twenty-two".