255555475 has 72 divisors (see below), whose sum is σ = 399561728. Its totient is φ = 158630400.

The previous prime is 255555473. The next prime is 255555533. The reversal of 255555475 is 574555552.

It is a happy number.

It is not a de Polignac number, because 255555475 - 2¹ = 255555473 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255555473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1567744 + ... + 1567906.

Almost surely, 2^255555475 is an apocalyptic number.

255555475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

255555475 is a deficient number, since it is larger than the sum of its proper divisors (144006253).

255555475 is a wasteful number, since it uses less digits than its factorization.

255555475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245 (or 223 counting only the distinct ones).

The product of its digits is 875000, while the sum is 43.

The square root of 255555475 is about 15986.1025581597. The cubic root of 255555475 is about 634.5926873095.

It can be divided in two parts, 25555547 and 5, that added together give a palindrome (25555552).

The spelling of 255555475 in words is "two hundred fifty-five million, five hundred fifty-five thousand, four hundred seventy-five".