4221625571251 has 12 divisors (see below), whose sum is σ = 4658354854776. Its totient is φ = 3822908165120.

The previous prime is 4221625571243. The next prime is 4221625571297. The reversal of 4221625571251 is 1521755261224.

It is not a de Polignac number, because 4221625571251 - 2³ = 4221625571243 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4221625571198 and 4221625571207.

It is not an unprimeable number, because it can be changed into a prime (4221625541251) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67847245 + ... + 67909438.

It is an arithmetic number, because the mean of its divisors is an integer number (388196237898).

Almost surely, 2^{4221625571251} is an apocalyptic number.

4221625571251 is a deficient number, since it is larger than the sum of its proper divisors (436729283525).

4221625571251 is a wasteful number, since it uses less digits than its factorization.

4221625571251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135756962 (or 135756951 counting only the distinct ones).

The product of its digits is 336000, while the sum is 43.

The spelling of 4221625571251 in words is "four trillion, two hundred twenty-one billion, six hundred twenty-five million, five hundred seventy-one thousand, two hundred fifty-one".