1265260751255 has 16 divisors (see below), whose sum is σ = 1608284281824. Its totient is φ = 952276485120.

The previous prime is 1265260751191. The next prime is 1265260751257. The reversal of 1265260751255 is 5521570625621.

It is not a de Polignac number, because 1265260751255 - 2⁶ = 1265260751191 is a prime.

It is a Duffinian number.

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 pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2841557 + ... + 3256526.

It is an arithmetic number, because the mean of its divisors is an integer number (100517767614).

Almost surely, 2^{1265260751255} is an apocalyptic number.

1265260751255 is a deficient number, since it is larger than the sum of its proper divisors (343023530569).

1265260751255 is a wasteful number, since it uses less digits than its factorization.

1265260751255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6100546.

The product of its (nonzero) digits is 1260000, while the sum is 47.

The spelling of 1265260751255 in words is "one trillion, two hundred sixty-five billion, two hundred sixty million, seven hundred fifty-one thousand, two hundred fifty-five".