1252521442254 has 32 divisors (see below), whose sum is σ = 2563631009280. Its totient is φ = 407850357600.

The previous prime is 1252521442243. The next prime is 1252521442397. The reversal of 1252521442254 is 4522441252521.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 13440682 + ... + 13533549.

It is an arithmetic number, because the mean of its divisors is an integer number (80113469040).

Almost surely, 2^{1252521442254} is an apocalyptic number.

1252521442254 is an abundant number, since it is smaller than the sum of its proper divisors (1311109567026).

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

1252521442254 is a wasteful number, since it uses less digits than its factorization.

1252521442254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26974416.

The product of its digits is 256000, while the sum is 39.

Adding to 1252521442254 its reverse (4522441252521), we get a palindrome (5774962694775).

The spelling of 1252521442254 in words is "one trillion, two hundred fifty-two billion, five hundred twenty-one million, four hundred forty-two thousand, two hundred fifty-four".