1255135547 has 2 divisors, whose sum is σ = 1255135548. Its totient is φ = 1255135546.

The previous prime is 1255135537. The next prime is 1255135579. The reversal of 1255135547 is 7455315521.

It is a weak prime.

It is an emirp because it is prime and its reverse (7455315521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1255135547 - 2²⁰ = 1254086971 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1255135547.

It is not a weakly prime, because it can be changed into another prime (1255135537) 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 as a sum of consecutive naturals, namely, 627567773 + 627567774.

It is an arithmetic number, because the mean of its divisors is an integer number (627567774).

Almost surely, 2^1255135547 is an apocalyptic number.

1255135547 is a deficient number, since it is larger than the sum of its proper divisors (1).

1255135547 is an equidigital number, since it uses as much as digits as its factorization.

1255135547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 105000, while the sum is 38.

The square root of 1255135547 is about 35427.8922178557. The cubic root of 1255135547 is about 1078.6905560701.

The spelling of 1255135547 in words is "one billion, two hundred fifty-five million, one hundred thirty-five thousand, five hundred forty-seven".