1255216137 has 16 divisors (see below), whose sum is σ = 1913226240. Its totient is φ = 717072912.

The previous prime is 1255216129. The next prime is 1255216141. The reversal of 1255216137 is 7316125521.

It is not a de Polignac number, because 1255216137 - 2³ = 1255216129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1255216098 and 1255216107.

It is not an unprimeable number, because it can be changed into a prime (1255216177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116188 + ... + 126530.

It is an arithmetic number, because the mean of its divisors is an integer number (119576640).

Almost surely, 2^1255216137 is an apocalyptic number.

It is an amenable number.

1255216137 is a deficient number, since it is larger than the sum of its proper divisors (658010103).

1255216137 is a wasteful number, since it uses less digits than its factorization.

1255216137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16132.

The product of its digits is 12600, while the sum is 33.

The square root of 1255216137 is about 35429.0295802750. The cubic root of 1255216137 is about 1078.7136425040.

The spelling of 1255216137 in words is "one billion, two hundred fifty-five million, two hundred sixteen thousand, one hundred thirty-seven".