1252534422412 has 144 divisors (see below), whose sum is σ = 2912478998688. Its totient is φ = 465556654080.

The previous prime is 1252534422401. The next prime is 1252534422427. The reversal of 1252534422412 is 2142244352521.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25401862 + ... + 25451122.

It is an arithmetic number, because the mean of its divisors is an integer number (20225548602).

Almost surely, 2^{1252534422412} 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 1252534422412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1456239499344).

1252534422412 is an abundant number, since it is smaller than the sum of its proper divisors (1659944576276).

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

1252534422412 is a wasteful number, since it uses less digits than its factorization.

1252534422412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49896 (or 49887 counting only the distinct ones).

The product of its digits is 153600, while the sum is 37.

Adding to 1252534422412 its reverse (2142244352521), we get a palindrome (3394778774933).

The spelling of 1252534422412 in words is "one trillion, two hundred fifty-two billion, five hundred thirty-four million, four hundred twenty-two thousand, four hundred twelve".