1252877551285 has 4 divisors (see below), whose sum is σ = 1503453061548. Its totient is φ = 1002302041024.

The previous prime is 1252877551241. The next prime is 1252877551297. The reversal of 1252877551285 is 5821557782521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 160315355236 + 1092562196049 = 400394^2 + 1045257^2 .

It is a cyclic number.

It is not a de Polignac number, because 1252877551285 - 2¹⁹ = 1252877026997 is a prime.

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 3 ways as a sum of consecutive naturals, for example, 125287755124 + ... + 125287755133.

It is an arithmetic number, because the mean of its divisors is an integer number (375863265387).

Almost surely, 2^{1252877551285} is an apocalyptic number.

It is an amenable number.

1252877551285 is a deficient number, since it is larger than the sum of its proper divisors (250575510263).

1252877551285 is an equidigital number, since it uses as much as digits as its factorization.

1252877551285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250575510262.

The product of its digits is 15680000, while the sum is 58.

The spelling of 1252877551285 in words is "one trillion, two hundred fifty-two billion, eight hundred seventy-seven million, five hundred fifty-one thousand, two hundred eighty-five".