250985281 has 8 divisors (see below), whose sum is σ = 258404960. Its totient is φ = 243637632.

The previous prime is 250985249. The next prime is 250985321. The reversal of 250985281 is 182589052.

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

It is a cyclic number.

It is not a de Polignac number, because 250985281 - 2⁵ = 250985249 is a prime.

It is a super-2 number, since 2×250985281² = 125987222557297922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (250985201) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 10896 + ... + 24913.

It is an arithmetic number, because the mean of its divisors is an integer number (32300620).

Almost surely, 2^250985281 is an apocalyptic number.

It is an amenable number.

250985281 is a deficient number, since it is larger than the sum of its proper divisors (7419679).

250985281 is a wasteful number, since it uses less digits than its factorization.

250985281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36015.

The product of its (nonzero) digits is 57600, while the sum is 40.

The square root of 250985281 is about 15842.5149834236. The cubic root of 250985281 is about 630.7870242990.

The spelling of 250985281 in words is "two hundred fifty million, nine hundred eighty-five thousand, two hundred eighty-one".