321225004255 has 16 divisors (see below), whose sum is σ = 387809017344. Its totient is φ = 255422891520.

The previous prime is 321225004237. The next prime is 321225004267. The reversal of 321225004255 is 552400522123.

It is not a de Polignac number, because 321225004255 - 2⁷ = 321225004127 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 15 ways as a sum of consecutive naturals, for example, 1019767 + ... + 1297063.

It is an arithmetic number, because the mean of its divisors is an integer number (24238063584).

Almost surely, 2^321225004255 is an apocalyptic number.

321225004255 is a deficient number, since it is larger than the sum of its proper divisors (66584013089).

321225004255 is a wasteful number, since it uses less digits than its factorization.

321225004255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278706.

The product of its (nonzero) digits is 24000, while the sum is 31.

Adding to 321225004255 its reverse (552400522123), we get a palindrome (873625526378).

The spelling of 321225004255 in words is "three hundred twenty-one billion, two hundred twenty-five million, four thousand, two hundred fifty-five".