255420404 has 12 divisors (see below), whose sum is σ = 447148128. Its totient is φ = 127663800.

The previous prime is 255420397. The next prime is 255420413. The reversal of 255420404 is 404024552.

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, 2759 + ... + 22769.

It is an arithmetic number, because the mean of its divisors is an integer number (37262344).

Almost surely, 2^255420404 is an apocalyptic number.

It is an amenable number.

255420404 is a deficient number, since it is larger than the sum of its proper divisors (191727724).

255420404 is a wasteful number, since it uses less digits than its factorization.

255420404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23206 (or 23204 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 255420404 is about 15981.8773615618. The cubic root of 255420404 is about 634.4808653075.

Adding to 255420404 its reverse (404024552), we get a palindrome (659444956).

The spelling of 255420404 in words is "two hundred fifty-five million, four hundred twenty thousand, four hundred four".