1252881321888 has 96 divisors (see below), whose sum is σ = 3761333452800. Its totient is φ = 357709950720.

The previous prime is 1252881321869. The next prime is 1252881321889. The reversal of 1252881321888 is 8881231882521.

It is a tau number, because it is divible by the number of its divisors (96).

It is a hoax number, since the sum of its digits (57) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1252881321889) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 273793 + ... + 1606463.

It is an arithmetic number, because the mean of its divisors is an integer number (39180556800).

Almost surely, 2^{1252881321888} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1252881321888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1880666726400).

1252881321888 is an abundant number, since it is smaller than the sum of its proper divisors (2508452130912).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1252881321888 is a wasteful number, since it uses less digits than its factorization.

1252881321888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1334090 (or 1334082 counting only the distinct ones).

The product of its digits is 3932160, while the sum is 57.

The spelling of 1252881321888 in words is "one trillion, two hundred fifty-two billion, eight hundred eighty-one million, three hundred twenty-one thousand, eight hundred eighty-eight".