1255378041265 has 8 divisors (see below), whose sum is σ = 1510386951168. Its totient is φ = 1001680231920.

The previous prime is 1255378041263. The next prime is 1255378041283. The reversal of 1255378041265 is 5621408735521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1255378041265 - 2¹ = 1255378041263 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1255378041263) 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 7 ways as a sum of consecutive naturals, for example, 327773031 + ... + 327776860.

It is an arithmetic number, because the mean of its divisors is an integer number (188798368896).

Almost surely, 2^{1255378041265} is an apocalyptic number.

It is an amenable number.

1255378041265 is a deficient number, since it is larger than the sum of its proper divisors (255008909903).

1255378041265 is an equidigital number, since it uses as much as digits as its factorization.

1255378041265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655550279.

The product of its (nonzero) digits is 2016000, while the sum is 49.

The spelling of 1255378041265 in words is "one trillion, two hundred fifty-five billion, three hundred seventy-eight million, forty-one thousand, two hundred sixty-five".