1255129927 has 4 divisors (see below), whose sum is σ = 1257750720. Its totient is φ = 1252509136.

The previous prime is 1255129919. The next prime is 1255129933. The reversal of 1255129927 is 7299215521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1255129927 - 2³ = 1255129919 is a prime.

It is a super-2 number, since 2×1255129927² = 3150702267302050658, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255129427) 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 3 ways as a sum of consecutive naturals, for example, 1309678 + ... + 1310635.

It is an arithmetic number, because the mean of its divisors is an integer number (314437680).

Almost surely, 2^1255129927 is an apocalyptic number.

1255129927 is a deficient number, since it is larger than the sum of its proper divisors (2620793).

1255129927 is an equidigital number, since it uses as much as digits as its factorization.

1255129927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2620792.

The product of its digits is 113400, while the sum is 43.

The square root of 1255129927 is about 35427.8129017302. The cubic root of 1255129927 is about 1078.6889460847.

The spelling of 1255129927 in words is "one billion, two hundred fifty-five million, one hundred twenty-nine thousand, nine hundred twenty-seven".