1251180455 has 24 divisors (see below), whose sum is σ = 1775198880. Its totient is φ = 843877440.

The previous prime is 1251180421. The next prime is 1251180479. The reversal of 1251180455 is 5540811521.

It is not a de Polignac number, because 1251180455 - 2²² = 1246986151 is a prime.

It is a congruent number.

It is an unprimeable number.

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 in 23 ways as a sum of consecutive naturals, for example, 26915 + ... + 56804.

It is an arithmetic number, because the mean of its divisors is an integer number (73966620).

Almost surely, 2^1251180455 is an apocalyptic number.

1251180455 is a deficient number, since it is larger than the sum of its proper divisors (524018425).

1251180455 is an equidigital number, since it uses as much as digits as its factorization.

1251180455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83799 (or 83792 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 32.

The square root of 1251180455 is about 35372.0292745553. The cubic root of 1251180455 is about 1077.5563334224.

Adding to 1251180455 its reverse (5540811521), we get a palindrome (6791991976).

The spelling of 1251180455 in words is "one billion, two hundred fifty-one million, one hundred eighty thousand, four hundred fifty-five".