1255695868385 has 32 divisors (see below), whose sum is σ = 1783439572992. Its totient is φ = 830558370240.

The previous prime is 1255695868373. The next prime is 1255695868403. The reversal of 1255695868385 is 5838685965521.

It is not a de Polignac number, because 1255695868385 - 2²⁶ = 1255628759521 is a prime.

It is a super-2 number, since 2×1255695868385² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1551797 + ... + 2217986.

It is an arithmetic number, because the mean of its divisors is an integer number (55732486656).

Almost surely, 2^{1255695868385} is an apocalyptic number.

It is an amenable number.

1255695868385 is a deficient number, since it is larger than the sum of its proper divisors (527743704607).

1255695868385 is a wasteful number, since it uses less digits than its factorization.

1255695868385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3770133.

The product of its digits is 622080000, while the sum is 71.

The spelling of 1255695868385 in words is "one trillion, two hundred fifty-five billion, six hundred ninety-five million, eight hundred sixty-eight thousand, three hundred eighty-five".