6225015356221 has 4 divisors (see below), whose sum is σ = 6239872195200. Its totient is φ = 6210158517244.

The previous prime is 6225015356201. The next prime is 6225015356251. The reversal of 6225015356221 is 1226535105226.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6225015356221 - 2²⁵ = 6224981801789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6225015356201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7428418861 + ... + 7428419698.

It is an arithmetic number, because the mean of its divisors is an integer number (1559968048800).

Almost surely, 2^{6225015356221} is an apocalyptic number.

It is an amenable number.

6225015356221 is a deficient number, since it is larger than the sum of its proper divisors (14856838979).

6225015356221 is a wasteful number, since it uses less digits than its factorization.

6225015356221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14856838978.

The product of its (nonzero) digits is 216000, while the sum is 40.

The spelling of 6225015356221 in words is "six trillion, two hundred twenty-five billion, fifteen million, three hundred fifty-six thousand, two hundred twenty-one".