425221053400021 has 8 divisors (see below), whose sum is σ = 431943991204320. Its totient is φ = 418536205895472.

The previous prime is 425221053400019. The next prime is 425221053400049. The reversal of 425221053400021 is 120004350122524.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 425221053400021 - 2¹ = 425221053400019 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 (425221053400001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9522552435 + ... + 9522597088.

It is an arithmetic number, because the mean of its divisors is an integer number (53992998900540).

Almost surely, 2^{425221053400021} is an apocalyptic number.

It is an amenable number.

425221053400021 is a deficient number, since it is larger than the sum of its proper divisors (6722937804299).

425221053400021 is a wasteful number, since it uses less digits than its factorization.

425221053400021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19045149875.

The product of its (nonzero) digits is 19200, while the sum is 31.

The spelling of 425221053400021 in words is "four hundred twenty-five trillion, two hundred twenty-one billion, fifty-three million, four hundred thousand, twenty-one".