205425030313666 has 16 divisors (see below), whose sum is σ = 329045654787840. Its totient is φ = 95971649311440.

The previous prime is 205425030313649. The next prime is 205425030313687. The reversal of 205425030313666 is 666313030524502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57125979936 + ... + 57125983531.

It is an arithmetic number, because the mean of its divisors is an integer number (20565353424240).

Almost surely, 2^{205425030313666} is an apocalyptic number.

205425030313666 is a deficient number, since it is larger than the sum of its proper divisors (123620624474174).

205425030313666 is a wasteful number, since it uses less digits than its factorization.

205425030313666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114251963529.

The product of its (nonzero) digits is 2332800, while the sum is 46.

The spelling of 205425030313666 in words is "two hundred five trillion, four hundred twenty-five billion, thirty million, three hundred thirteen thousand, six hundred sixty-six".