248945285 has 4 divisors (see below), whose sum is σ = 298734348. Its totient is φ = 199156224.

The previous prime is 248945231. The next prime is 248945311. The reversal of 248945285 is 582549842.

It is a Cunningham number, because it is equal to 15778²+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 89605156 + 159340129 = 9466^2 + 12623^2 .

It is a cyclic number.

It is not a de Polignac number, because 248945285 - 2¹⁰ = 248944261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24894524 + ... + 24894533.

It is an arithmetic number, because the mean of its divisors is an integer number (74683587).

Almost surely, 2^248945285 is an apocalyptic number.

It is an amenable number.

248945285 is a deficient number, since it is larger than the sum of its proper divisors (49789063).

248945285 is an equidigital number, since it uses as much as digits as its factorization.

248945285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49789062.

The product of its digits is 921600, while the sum is 47.

The square root of 248945285 is about 15778.0000316897. Note that the first 4 decimals coincide. The cubic root of 248945285 is about 629.0733710959.

It can be divided in two parts, 2489 and 45285, that added together give a palindrome (47774).

The spelling of 248945285 in words is "two hundred forty-eight million, nine hundred forty-five thousand, two hundred eighty-five".