1255250477887 has 16 divisors (see below), whose sum is σ = 1440676940032. Its totient is φ = 1071351204480.

The previous prime is 1255250477801. The next prime is 1255250477891. The reversal of 1255250477887 is 7887740525521.

It is a cyclic number.

It is not a de Polignac number, because 1255250477887 - 2¹¹ = 1255250475839 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 (1255250477087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18501208 + ... + 18568930.

It is an arithmetic number, because the mean of its divisors is an integer number (90042308752).

Almost surely, 2^{1255250477887} is an apocalyptic number.

1255250477887 is a deficient number, since it is larger than the sum of its proper divisors (185426462145).

1255250477887 is a wasteful number, since it uses less digits than its factorization.

1255250477887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78958.

The product of its (nonzero) digits is 43904000, while the sum is 61.

The spelling of 1255250477887 in words is "one trillion, two hundred fifty-five billion, two hundred fifty million, four hundred seventy-seven thousand, eight hundred eighty-seven".