1285268554285 has 16 divisors (see below), whose sum is σ = 1633113486576. Its totient is φ = 967692279808.

The previous prime is 1285268554267. The next prime is 1285268554321. The reversal of 1285268554285 is 5824558625821.

It can be written as a sum of positive squares in 8 ways, for example, as 12661200484 + 1272607353801 = 112522^2 + 1128099^2 .

It is a cyclic number.

It is not a de Polignac number, because 1285268554285 - 2¹⁵ = 1285268521517 is a prime.

It is a super-2 number, since 2×1285268554285² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1887717 + ... + 2476693.

It is an arithmetic number, because the mean of its divisors is an integer number (102069592911).

Almost surely, 2^{1285268554285} is an apocalyptic number.

It is an amenable number.

1285268554285 is a deficient number, since it is larger than the sum of its proper divisors (347844932291).

1285268554285 is a wasteful number, since it uses less digits than its factorization.

1285268554285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614672.

The product of its digits is 61440000, while the sum is 61.

The spelling of 1285268554285 in words is "one trillion, two hundred eighty-five billion, two hundred sixty-eight million, five hundred fifty-four thousand, two hundred eighty-five".