255998695 has 4 divisors (see below), whose sum is σ = 307198440. Its totient is φ = 204798952.

The previous prime is 255998683. The next prime is 255998753. The reversal of 255998695 is 596899552.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 255998695 - 2¹³ = 255990503 is a prime.

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, 25599865 + ... + 25599874.

It is an arithmetic number, because the mean of its divisors is an integer number (76799610).

Almost surely, 2^255998695 is an apocalyptic number.

255998695 is a deficient number, since it is larger than the sum of its proper divisors (51199745).

255998695 is an equidigital number, since it uses as much as digits as its factorization.

255998695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51199744.

The product of its digits is 8748000, while the sum is 58.

The square root of 255998695 is about 15999.9592186980. The cubic root of 255998695 is about 634.9593418488.

The spelling of 255998695 in words is "two hundred fifty-five million, nine hundred ninety-eight thousand, six hundred ninety-five".