1253122564511 has 4 divisors (see below), whose sum is σ = 1253135238024. Its totient is φ = 1253109891000.

The previous prime is 1253122564483. The next prime is 1253122564513. The reversal of 1253122564511 is 1154652213521.

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

It is a cyclic number.

It is not a de Polignac number, because 1253122564511 - 2³⁸ = 978244657567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253122564513) 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 3 ways as a sum of consecutive naturals, for example, 6187265 + ... + 6386586.

It is an arithmetic number, because the mean of its divisors is an integer number (313283809506).

Almost surely, 2^{1253122564511} is an apocalyptic number.

1253122564511 is a deficient number, since it is larger than the sum of its proper divisors (12673513).

1253122564511 is an equidigital number, since it uses as much as digits as its factorization.

1253122564511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12673512.

The product of its digits is 72000, while the sum is 38.

The spelling of 1253122564511 in words is "one trillion, two hundred fifty-three billion, one hundred twenty-two million, five hundred sixty-four thousand, five hundred eleven".