1255320232545 has 16 divisors (see below), whose sum is σ = 2023844530752. Its totient is φ = 664393404480.

The previous prime is 1255320232541. The next prime is 1255320232567. The reversal of 1255320232545 is 5452320235521.

It is not a de Polignac number, because 1255320232545 - 2² = 1255320232541 is a prime.

It is a super-3 number, since 3×1255320232545³ (a number of 37 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1255320232541) 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, 319417942 + ... + 319421871.

It is an arithmetic number, because the mean of its divisors is an integer number (126490283172).

Almost surely, 2^{1255320232545} is an apocalyptic number.

1255320232545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1255320232545 is a deficient number, since it is larger than the sum of its proper divisors (768524298207).

1255320232545 is a wasteful number, since it uses less digits than its factorization.

1255320232545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638839952.

The product of its (nonzero) digits is 360000, while the sum is 39.

The spelling of 1255320232545 in words is "one trillion, two hundred fifty-five billion, three hundred twenty million, two hundred thirty-two thousand, five hundred forty-five".