255634505 has 8 divisors (see below), whose sum is σ = 350584512. Its totient is φ = 175292208.

The previous prime is 255634471. The next prime is 255634513. The reversal of 255634505 is 505436552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 255634505 - 2¹² = 255630409 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 7303843 = 255634505 / (2 + 5 + 5 + 6 + 3 + 4 + 5 + 0 + 5).

It is a Duffinian 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, 3651887 + ... + 3651956.

It is an arithmetic number, because the mean of its divisors is an integer number (43823064).

Almost surely, 2^255634505 is an apocalyptic number.

It is an amenable number.

255634505 is a deficient number, since it is larger than the sum of its proper divisors (94950007).

255634505 is an equidigital number, since it uses as much as digits as its factorization.

255634505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7303855.

The product of its (nonzero) digits is 90000, while the sum is 35.

The square root of 255634505 is about 15988.5742015978. The cubic root of 255634505 is about 634.6580960578.

The spelling of 255634505 in words is "two hundred fifty-five million, six hundred thirty-four thousand, five hundred five".