254320985 has 16 divisors (see below), whose sum is σ = 322185600. Its totient is φ = 192185856.

The previous prime is 254320967. The next prime is 254320999. The reversal of 254320985 is 589023452.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-254320985 is a prime.

It is a super-2 number, since 2×254320985² = 129358326822740450, which contains 22 as substring.

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, 30377 + ... + 37833.

It is an arithmetic number, because the mean of its divisors is an integer number (20136600).

Almost surely, 2^254320985 is an apocalyptic number.

It is an amenable number.

254320985 is a deficient number, since it is larger than the sum of its proper divisors (67864615).

254320985 is a wasteful number, since it uses less digits than its factorization.

254320985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7840.

The product of its (nonzero) digits is 86400, while the sum is 38.

The square root of 254320985 is about 15947.4444661206. Note that the first 4 decimals coincide. The cubic root of 254320985 is about 633.5692133071.

The spelling of 254320985 in words is "two hundred fifty-four million, three hundred twenty thousand, nine hundred eighty-five".