5125221512512 has 56 divisors (see below), whose sum is σ = 10190836529640. Its totient is φ = 2557453271040.

The previous prime is 5125221512447. The next prime is 5125221512531. The reversal of 5125221512512 is 2152151225215.

It can be written as a sum of positive squares in 4 ways, for example, as 2596816223296 + 2528405289216 = 1611464^2 + 1590096^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 407760564 + ... + 407773132.

Almost surely, 2^{5125221512512} is an apocalyptic number.

It is an amenable number.

5125221512512 is a deficient number, since it is larger than the sum of its proper divisors (5065615017128).

5125221512512 is a wasteful number, since it uses less digits than its factorization.

5125221512512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24899 (or 24889 counting only the distinct ones).

The product of its digits is 20000, while the sum is 34.

Adding to 5125221512512 its reverse (2152151225215), we get a palindrome (7277372737727).

The spelling of 5125221512512 in words is "five trillion, one hundred twenty-five billion, two hundred twenty-one million, five hundred twelve thousand, five hundred twelve".