6625122062421 has 32 divisors (see below), whose sum is σ = 8889683983488. Its totient is φ = 4388761681920.

The previous prime is 6625122062371. The next prime is 6625122062437. The reversal of 6625122062421 is 1242602215266.

It is not a de Polignac number, because 6625122062421 - 2¹⁵ = 6625122029653 is a prime.

It is a super-3 number, since 3×6625122062421³ (a number of 39 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6625122062421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6625122062441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 446820810 + ... + 446835636.

It is an arithmetic number, because the mean of its divisors is an integer number (277802624484).

Almost surely, 2^{6625122062421} is an apocalyptic number.

It is an amenable number.

6625122062421 is a deficient number, since it is larger than the sum of its proper divisors (2264561921067).

6625122062421 is a wasteful number, since it uses less digits than its factorization.

6625122062421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16581.

The product of its (nonzero) digits is 138240, while the sum is 39.

Adding to 6625122062421 its reverse (1242602215266), we get a palindrome (7867724277687).

The spelling of 6625122062421 in words is "six trillion, six hundred twenty-five billion, one hundred twenty-two million, sixty-two thousand, four hundred twenty-one".