1265260751258 has 16 divisors (see below), whose sum is σ = 2169081349440. Its totient is φ = 542238878016.

The previous prime is 1265260751257. The next prime is 1265260751273. The reversal of 1265260751258 is 8521570625621.

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, 804191 + ... + 1782482.

It is an arithmetic number, because the mean of its divisors is an integer number (135567584340).

Almost surely, 2^{1265260751258} is an apocalyptic number.

1265260751258 is a deficient number, since it is larger than the sum of its proper divisors (903820598182).

1265260751258 is a wasteful number, since it uses less digits than its factorization.

1265260751258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2621621.

The product of its (nonzero) digits is 2016000, while the sum is 50.

The spelling of 1265260751258 in words is "one trillion, two hundred sixty-five billion, two hundred sixty million, seven hundred fifty-one thousand, two hundred fifty-eight".