255425343332221 has 8 divisors (see below), whose sum is σ = 273708801644544. Its totient is φ = 237503933699520.

The previous prime is 255425343332219. The next prime is 255425343332239. The reversal of 255425343332221 is 122233343524552.

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 255425343332221 - 2¹ = 255425343332219 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 (255425341332221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90512168445 + ... + 90512171266.

It is an arithmetic number, because the mean of its divisors is an integer number (34213600205568).

Almost surely, 2^{255425343332221} is an apocalyptic number.

It is an amenable number.

255425343332221 is a deficient number, since it is larger than the sum of its proper divisors (18283458312323).

255425343332221 is a wasteful number, since it uses less digits than its factorization.

255425343332221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181024339811.

The product of its digits is 5184000, while the sum is 46.

Adding to 255425343332221 its reverse (122233343524552), we get a palindrome (377658686856773).

The spelling of 255425343332221 in words is "two hundred fifty-five trillion, four hundred twenty-five billion, three hundred forty-three million, three hundred thirty-two thousand, two hundred twenty-one".