1255131849 has 16 divisors (see below), whose sum is σ = 1794830400. Its totient is φ = 777756096.

The previous prime is 1255131847. The next prime is 1255131869. The reversal of 1255131849 is 9481315521.

It is not a de Polignac number, because 1255131849 - 2¹ = 1255131847 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1255131841) 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 15 ways as a sum of consecutive naturals, for example, 204714 + ... + 210755.

It is an arithmetic number, because the mean of its divisors is an integer number (112176900).

Almost surely, 2^1255131849 is an apocalyptic number.

1255131849 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1255131849 is a deficient number, since it is larger than the sum of its proper divisors (539698551).

1255131849 is a wasteful number, since it uses less digits than its factorization.

1255131849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415544.

The product of its digits is 43200, while the sum is 39.

The square root of 1255131849 is about 35427.8400273006. The cubic root of 1255131849 is about 1078.6894966888.

The spelling of 1255131849 in words is "one billion, two hundred fifty-five million, one hundred thirty-one thousand, eight hundred forty-nine".