245669505 has 8 divisors (see below), whose sum is σ = 393071232. Its totient is φ = 131023728.

The previous prime is 245669497. The next prime is 245669519. The reversal of 245669505 is 505966542.

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

It is not a de Polignac number, because 245669505 - 2³ = 245669497 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8188969 + ... + 8188998.

It is an arithmetic number, because the mean of its divisors is an integer number (49133904).

Almost surely, 2^245669505 is an apocalyptic number.

It is an amenable number.

245669505 is a deficient number, since it is larger than the sum of its proper divisors (147401727).

245669505 is a wasteful number, since it uses less digits than its factorization.

245669505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16377975.

The product of its (nonzero) digits is 324000, while the sum is 42.

The square root of 245669505 is about 15673.8478045437. The cubic root of 245669505 is about 626.3019303473.

The spelling of 245669505 in words is "two hundred forty-five million, six hundred sixty-nine thousand, five hundred five".