255487705 has 8 divisors (see below), whose sum is σ = 334456704. Its totient is φ = 185809200.

The previous prime is 255487697. The next prime is 255487733. The reversal of 255487705 is 507784552.

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

It is not a de Polignac number, because 255487705 - 2³ = 255487697 is a prime.

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, 2322561 + ... + 2322670.

It is an arithmetic number, because the mean of its divisors is an integer number (41807088).

Almost surely, 2^255487705 is an apocalyptic number.

It is an amenable number.

255487705 is a deficient number, since it is larger than the sum of its proper divisors (78968999).

255487705 is a wasteful number, since it uses less digits than its factorization.

255487705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4645247.

The product of its (nonzero) digits is 392000, while the sum is 43.

The square root of 255487705 is about 15983.9827640047. The cubic root of 255487705 is about 634.5365870981.

The spelling of 255487705 in words is "two hundred fifty-five million, four hundred eighty-seven thousand, seven hundred five".