205425030313667 has 4 divisors (see below), whose sum is σ = 205426353819456. Its totient is φ = 205423706807880.

The previous prime is 205425030313649. The next prime is 205425030313687. The reversal of 205425030313667 is 766313030524502.

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 205425030313667 - 2⁸ = 205425030313411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205425030313687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 661520048 + ... + 661830509.

It is an arithmetic number, because the mean of its divisors is an integer number (51356588454864).

Almost surely, 2^{205425030313667} is an apocalyptic number.

205425030313667 is a deficient number, since it is larger than the sum of its proper divisors (1323505789).

205425030313667 is a wasteful number, since it uses less digits than its factorization.

205425030313667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1323505788.

The product of its (nonzero) digits is 2721600, while the sum is 47.

The spelling of 205425030313667 in words is "two hundred five trillion, four hundred twenty-five billion, thirty million, three hundred thirteen thousand, six hundred sixty-seven".