255421405304 has 32 divisors (see below), whose sum is σ = 516741017520. Its totient is φ = 117661372416.

The previous prime is 255421405297. The next prime is 255421405373. The reversal of 255421405304 is 403504124552.

It is a super-3 number, since 3×255421405304³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2293577 + ... + 2402360.

Almost surely, 2^255421405304 is an apocalyptic number.

It is an amenable number.

255421405304 is an abundant number, since it is smaller than the sum of its proper divisors (261319612216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255421405304 is a wasteful number, since it uses less digits than its factorization.

255421405304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4696479 (or 4696475 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 35.

Adding to 255421405304 its reverse (403504124552), we get a palindrome (658925529856).

The spelling of 255421405304 in words is "two hundred fifty-five billion, four hundred twenty-one million, four hundred five thousand, three hundred four".