1255116949201 has 4 divisors (see below), whose sum is σ = 1271004505600. Its totient is φ = 1239229392804.

The previous prime is 1255116949193. The next prime is 1255116949211. The reversal of 1255116949201 is 1029496115521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1255116949201 - 2³ = 1255116949193 is a prime.

It is a super-2 number, since 2×1255116949201² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1255116949211) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 7943778081 + ... + 7943778238.

It is an arithmetic number, because the mean of its divisors is an integer number (317751126400).

Almost surely, 2^{1255116949201} is an apocalyptic number.

It is an amenable number.

1255116949201 is a deficient number, since it is larger than the sum of its proper divisors (15887556399).

1255116949201 is an equidigital number, since it uses as much as digits as its factorization.

1255116949201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15887556398.

The product of its (nonzero) digits is 194400, while the sum is 46.

The spelling of 1255116949201 in words is "one trillion, two hundred fifty-five billion, one hundred sixteen million, nine hundred forty-nine thousand, two hundred one".