245255666 has 8 divisors (see below), whose sum is σ = 370227180. Its totient is φ = 121846608.

The previous prime is 245255657. The next prime is 245255671. The reversal of 245255666 is 666552542.

It can be written as a sum of positive squares in 2 ways, for example, as 244265641 + 990025 = 15629^2 + 995^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 390221 + ... + 390848.

Almost surely, 2^245255666 is an apocalyptic number.

245255666 is a deficient number, since it is larger than the sum of its proper divisors (124971514).

245255666 is a wasteful number, since it uses less digits than its factorization.

245255666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781228.

The product of its digits is 432000, while the sum is 41.

The square root of 245255666 is about 15660.6406637787. The cubic root of 245255666 is about 625.9500567491.

The spelling of 245255666 in words is "two hundred forty-five million, two hundred fifty-five thousand, six hundred sixty-six".