1255118677 has 2 divisors, whose sum is σ = 1255118678. Its totient is φ = 1255118676.

The previous prime is 1255118647. The next prime is 1255118719. The reversal of 1255118677 is 7768115521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1253230801 + 1887876 = 35401^2 + 1374^2 .

It is an emirp because it is prime and its reverse (7768115521) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1255118677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1255118647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627559338 + 627559339.

It is an arithmetic number, because the mean of its divisors is an integer number (627559339).

Almost surely, 2^1255118677 is an apocalyptic number.

It is an amenable number.

1255118677 is a deficient number, since it is larger than the sum of its proper divisors (1).

1255118677 is an equidigital number, since it uses as much as digits as its factorization.

1255118677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 117600, while the sum is 43.

The square root of 1255118677 is about 35427.6541278138. The cubic root of 1255118677 is about 1078.6857232345.

The spelling of 1255118677 in words is "one billion, two hundred fifty-five million, one hundred eighteen thousand, six hundred seventy-seven".