1255685890653 has 32 divisors (see below), whose sum is σ = 1958477081600. Its totient is φ = 792946328688.

The previous prime is 1255685890643. The next prime is 1255685890673. The reversal of 1255685890653 is 3560985865521.

1255685890653 is a `hidden beast` number, since 1 + 2 + 5 + 568 + 5 + 8 + 9 + 0 + 65 + 3 = 666.

It is not a de Polignac number, because 1255685890653 - 2⁴ = 1255685890637 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 (1255685890633) by changing a digit.

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, 3320826 + ... + 3679572.

It is an arithmetic number, because the mean of its divisors is an integer number (61202408800).

Almost surely, 2^{1255685890653} is an apocalyptic number.

It is an amenable number.

1255685890653 is a deficient number, since it is larger than the sum of its proper divisors (702791190947).

1255685890653 is a wasteful number, since it uses less digits than its factorization.

1255685890653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365598 (or 365592 counting only the distinct ones).

The product of its (nonzero) digits is 77760000, while the sum is 63.

The spelling of 1255685890653 in words is "one trillion, two hundred fifty-five billion, six hundred eighty-five million, eight hundred ninety thousand, six hundred fifty-three".