1255320519 has 16 divisors (see below), whose sum is σ = 1838457600. Its totient is φ = 758362176.

The previous prime is 1255320499. The next prime is 1255320581. The reversal of 1255320519 is 9150235521.

It is not a de Polignac number, because 1255320519 - 2⁸ = 1255320263 is a prime.

It is a super-2 number, since 2×1255320519² = 3151659210844858722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1255320519.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255321519) 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, 477454 + ... + 480075.

It is an arithmetic number, because the mean of its divisors is an integer number (114903600).

Almost surely, 2^1255320519 is an apocalyptic number.

1255320519 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1255320519 is a deficient number, since it is larger than the sum of its proper divisors (583137081).

1255320519 is a wasteful number, since it uses less digits than its factorization.

1255320519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957574.

The product of its (nonzero) digits is 13500, while the sum is 33.

The square root of 1255320519 is about 35430.5026636654. The cubic root of 1255320519 is about 1078.7435431092.

The spelling of 1255320519 in words is "one billion, two hundred fifty-five million, three hundred twenty thousand, five hundred nineteen".