1267891755025 has 24 divisors (see below), whose sum is σ = 1798328988864. Its totient is φ = 868663790400.

The previous prime is 1267891755007. The next prime is 1267891755029. The reversal of 1267891755025 is 5205571987621.

It is not a de Polignac number, because 1267891755025 - 2⁹ = 1267891754513 is a prime.

It is a super-2 number, since 2×1267891755025² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1267891755029) 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, 2911306 + ... + 3318355.

It is an arithmetic number, because the mean of its divisors is an integer number (74930374536).

Almost surely, 2^{1267891755025} is an apocalyptic number.

It is an amenable number.

1267891755025 is a deficient number, since it is larger than the sum of its proper divisors (530437233839).

1267891755025 is a wasteful number, since it uses less digits than its factorization.

1267891755025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6230841 (or 6230836 counting only the distinct ones).

The product of its (nonzero) digits is 10584000, while the sum is 58.

The spelling of 1267891755025 in words is "one trillion, two hundred sixty-seven billion, eight hundred ninety-one million, seven hundred fifty-five thousand, twenty-five".