1255251355 has 16 divisors (see below), whose sum is σ = 1596801600. Its totient is φ = 944008192.

The previous prime is 1255251353. The next prime is 1255251379. The reversal of 1255251355 is 5531525521.

It is a cyclic number.

It is not a de Polignac number, because 1255251355 - 2¹ = 1255251353 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1255251355.

It is not an unprimeable number, because it can be changed into a prime (1255251353) 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, 67071 + ... + 83719.

It is an arithmetic number, because the mean of its divisors is an integer number (99800100).

Almost surely, 2^1255251355 is an apocalyptic number.

1255251355 is a deficient number, since it is larger than the sum of its proper divisors (341550245).

1255251355 is a wasteful number, since it uses less digits than its factorization.

1255251355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17558.

The product of its digits is 37500, while the sum is 34.

The square root of 1255251355 is about 35429.5265985872. The cubic root of 1255251355 is about 1078.7237310140.

Adding to 1255251355 its reverse (5531525521), we get a palindrome (6786776876).

The spelling of 1255251355 in words is "one billion, two hundred fifty-five million, two hundred fifty-one thousand, three hundred fifty-five".