1255678677 has 48 divisors (see below), whose sum is σ = 2011289280. Its totient is φ = 748569600.

The previous prime is 1255678673. The next prime is 1255678681. The reversal of 1255678677 is 7768765521.

It is a happy number.

1255678677 is a `hidden beast` number, since 1 + 2 + 5 + 567 + 8 + 6 + 77 = 666.

It is an interprime number because it is at equal distance from previous prime (1255678673) and next prime (1255678681).

It is not a de Polignac number, because 1255678677 - 2² = 1255678673 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255678673) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2198802 + ... + 2199372.

It is an arithmetic number, because the mean of its divisors is an integer number (41901860).

Almost surely, 2^1255678677 is an apocalyptic number.

It is an amenable number.

1255678677 is a deficient number, since it is larger than the sum of its proper divisors (755610603).

1255678677 is a wasteful number, since it uses less digits than its factorization.

1255678677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914 (or 911 counting only the distinct ones).

The product of its digits is 4939200, while the sum is 54.

The square root of 1255678677 is about 35435.5566768747. The cubic root of 1255678677 is about 1078.8461261774.

The spelling of 1255678677 in words is "one billion, two hundred fifty-five million, six hundred seventy-eight thousand, six hundred seventy-seven".