1265260751256 has 32 divisors (see below), whose sum is σ = 3163225040640. Its totient is φ = 421743828768.

The previous prime is 1265260751191. The next prime is 1265260751257. The reversal of 1265260751256 is 6521570625621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1265260751257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 490045 + ... + 1664531.

It is an arithmetic number, because the mean of its divisors is an integer number (98850782520).

Almost surely, 2^{1265260751256} is an apocalyptic number.

It is an amenable number.

1265260751256 is an abundant number, since it is smaller than the sum of its proper divisors (1897964289384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1265260751256 is a wasteful number, since it uses less digits than its factorization.

1265260751256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1219383 (or 1219379 counting only the distinct ones).

The product of its (nonzero) digits is 1512000, while the sum is 48.

The spelling of 1265260751256 in words is "one trillion, two hundred sixty-five billion, two hundred sixty million, seven hundred fifty-one thousand, two hundred fifty-six".