4006225765421 has 12 divisors (see below), whose sum is σ = 4526329239744. Its totient is φ = 3516436400400.

The previous prime is 4006225765393. The next prime is 4006225765457. The reversal of 4006225765421 is 1245675226004.

4006225765421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4006225765421 - 2⁶ = 4006225765357 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 (4006225765921) 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, 216520085 + ... + 216538586.

It is an arithmetic number, because the mean of its divisors is an integer number (377194103312).

Almost surely, 2^{4006225765421} is an apocalyptic number.

It is an amenable number.

4006225765421 is a deficient number, since it is larger than the sum of its proper divisors (520103474323).

4006225765421 is a wasteful number, since it uses less digits than its factorization.

4006225765421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433058740 (or 433058711 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 44.

The spelling of 4006225765421 in words is "four trillion, six billion, two hundred twenty-five million, seven hundred sixty-five thousand, four hundred twenty-one".