245894505 has 16 divisors (see below), whose sum is σ = 394554240. Its totient is φ = 130769408.

The previous prime is 245894483. The next prime is 245894521. The reversal of 245894505 is 505498542.

It is a cyclic number.

It is not a de Polignac number, because 245894505 - 2⁹ = 245893993 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 15 ways as a sum of consecutive naturals, for example, 17925 + ... + 28514.

It is an arithmetic number, because the mean of its divisors is an integer number (24659640).

Almost surely, 2^245894505 is an apocalyptic number.

It is an amenable number.

245894505 is a deficient number, since it is larger than the sum of its proper divisors (148659735).

245894505 is a wasteful number, since it uses less digits than its factorization.

245894505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46800.

The product of its (nonzero) digits is 288000, while the sum is 42.

The square root of 245894505 is about 15681.0237229589. The cubic root of 245894505 is about 626.4930745916.

The spelling of 245894505 in words is "two hundred forty-five million, eight hundred ninety-four thousand, five hundred five".