1255131624559 has 2 divisors, whose sum is σ = 1255131624560. Its totient is φ = 1255131624558.

The previous prime is 1255131624497. The next prime is 1255131624581. The reversal of 1255131624559 is 9554261315521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1255131624559 - 2⁷ = 1255131624431 is a prime.

It is a super-2 number, since 2×1255131624559² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1255131624589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627565812279 + 627565812280.

It is an arithmetic number, because the mean of its divisors is an integer number (627565812280).

Almost surely, 2^{1255131624559} is an apocalyptic number.

1255131624559 is a deficient number, since it is larger than the sum of its proper divisors (1).

1255131624559 is an equidigital number, since it uses as much as digits as its factorization.

1255131624559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1620000, while the sum is 49.

The spelling of 1255131624559 in words is "one trillion, two hundred fifty-five billion, one hundred thirty-one million, six hundred twenty-four thousand, five hundred fifty-nine".