205255254823 has 8 divisors (see below), whose sum is σ = 220891866480. Its totient is φ = 190014506880.

The previous prime is 205255254797. The next prime is 205255254839. The reversal of 205255254823 is 328452552502.

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

It is a cyclic number.

It is not a de Polignac number, because 205255254823 - 2³⁷ = 67816301351 is a prime.

It is a super-2 number, since 2×205255254823² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 205255254823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205255254023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98964853 + ... + 98966926.

It is an arithmetic number, because the mean of its divisors is an integer number (27611483310).

Almost surely, 2^205255254823 is an apocalyptic number.

205255254823 is a deficient number, since it is larger than the sum of its proper divisors (15636611657).

205255254823 is a wasteful number, since it uses less digits than its factorization.

205255254823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197931857.

The product of its (nonzero) digits is 960000, while the sum is 43.

The spelling of 205255254823 in words is "two hundred five billion, two hundred fifty-five million, two hundred fifty-four thousand, eight hundred twenty-three".