1275200561805 has 32 divisors (see below), whose sum is σ = 2047125104640. Its totient is φ = 677841975360.

The previous prime is 1275200561753. The next prime is 1275200561819. The reversal of 1275200561805 is 5081650025721.

It is not a de Polignac number, because 1275200561805 - 2²⁹ = 1274663690893 is a prime.

It is a super-2 number, since 2×1275200561805² (a number of 25 digits) contains 22 as substring.

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 31 ways as a sum of consecutive naturals, for example, 6585520 + ... + 6776390.

It is an arithmetic number, because the mean of its divisors is an integer number (63972659520).

Almost surely, 2^{1275200561805} is an apocalyptic number.

1275200561805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1275200561805 is a deficient number, since it is larger than the sum of its proper divisors (771924542835).

1275200561805 is a wasteful number, since it uses less digits than its factorization.

1275200561805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192361.

The product of its (nonzero) digits is 168000, while the sum is 42.

The spelling of 1275200561805 in words is "one trillion, two hundred seventy-five billion, two hundred million, five hundred sixty-one thousand, eight hundred five".