221525052425255 has 4 divisors (see below), whose sum is σ = 265830062910312. Its totient is φ = 177220041940200.

The previous prime is 221525052425239. The next prime is 221525052425297. The reversal of 221525052425255 is 552524250525122.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 221525052425255 - 2⁴ = 221525052425239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22152505242521 + ... + 22152505242530.

It is an arithmetic number, because the mean of its divisors is an integer number (66457515727578).

Almost surely, 2^{221525052425255} is an apocalyptic number.

221525052425255 is a deficient number, since it is larger than the sum of its proper divisors (44305010485057).

221525052425255 is an equidigital number, since it uses as much as digits as its factorization.

221525052425255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44305010485056.

The product of its (nonzero) digits is 4000000, while the sum is 47.

The spelling of 221525052425255 in words is "two hundred twenty-one trillion, five hundred twenty-five billion, fifty-two million, four hundred twenty-five thousand, two hundred fifty-five".