1255122899 has 2 divisors, whose sum is σ = 1255122900. Its totient is φ = 1255122898.

The previous prime is 1255122887. The next prime is 1255122923. The reversal of 1255122899 is 9982215521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1255122899 - 2¹² = 1255118803 is a prime.

It is not a weakly prime, because it can be changed into another prime (1255122199) 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, 627561449 + 627561450.

It is an arithmetic number, because the mean of its divisors is an integer number (627561450).

Almost surely, 2^1255122899 is an apocalyptic number.

1255122899 is a deficient number, since it is larger than the sum of its proper divisors (1).

1255122899 is an equidigital number, since it uses as much as digits as its factorization.

1255122899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129600, while the sum is 44.

The square root of 1255122899 is about 35427.7137139839. The cubic root of 1255122899 is about 1078.6869327366.

The spelling of 1255122899 in words is "one billion, two hundred fifty-five million, one hundred twenty-two thousand, eight hundred ninety-nine".