1295129287605 has 16 divisors (see below), whose sum is σ = 2074201309440. Its totient is φ = 690070803648.

The previous prime is 1295129287601. The next prime is 1295129287663. The reversal of 1295129287605 is 5067829215921.

It is not a de Polignac number, because 1295129287605 - 2² = 1295129287601 is a prime.

It is a super-2 number, since 2×1295129287605² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1295129287601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41534922 + ... + 41566091.

It is an arithmetic number, because the mean of its divisors is an integer number (129637581840).

Almost surely, 2^{1295129287605} is an apocalyptic number.

1295129287605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1295129287605 is a deficient number, since it is larger than the sum of its proper divisors (779072021835).

1295129287605 is a wasteful number, since it uses less digits than its factorization.

1295129287605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83102060.

The product of its (nonzero) digits is 5443200, while the sum is 57.

The spelling of 1295129287605 in words is "one trillion, two hundred ninety-five billion, one hundred twenty-nine million, two hundred eighty-seven thousand, six hundred five".