53425406221 has 8 divisors (see below), whose sum is σ = 58619155104. Its totient is φ = 48287806320.

The previous prime is 53425406183. The next prime is 53425406239. The reversal of 53425406221 is 12260452435.

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 53425406221 - 2²⁷ = 53291188493 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 (53425406821) 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, 14035251 + ... + 14039056.

It is an arithmetic number, because the mean of its divisors is an integer number (7327394388).

Almost surely, 2^53425406221 is an apocalyptic number.

It is an amenable number.

53425406221 is a deficient number, since it is larger than the sum of its proper divisors (5193748883).

53425406221 is a wasteful number, since it uses less digits than its factorization.

53425406221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28074491.

The product of its (nonzero) digits is 57600, while the sum is 34.

Adding to 53425406221 its reverse (12260452435), we get a palindrome (65685858656).

The spelling of 53425406221 in words is "fifty-three billion, four hundred twenty-five million, four hundred six thousand, two hundred twenty-one".