1252567931819 has 4 divisors (see below), whose sum is σ = 1263652603896. Its totient is φ = 1241483259744.

The previous prime is 1252567931789. The next prime is 1252567931833. The reversal of 1252567931819 is 9181397652521.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1252567931819 is a prime.

It is a super-2 number, since 2×1252567931819² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1252567934819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5542335869 + ... + 5542336094.

It is an arithmetic number, because the mean of its divisors is an integer number (315913150974).

Almost surely, 2^{1252567931819} is an apocalyptic number.

1252567931819 is a deficient number, since it is larger than the sum of its proper divisors (11084672077).

1252567931819 is a wasteful number, since it uses less digits than its factorization.

1252567931819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11084672076.

The product of its digits is 8164800, while the sum is 59.

The spelling of 1252567931819 in words is "one trillion, two hundred fifty-two billion, five hundred sixty-seven million, nine hundred thirty-one thousand, eight hundred nineteen".