249512285 has 24 divisors (see below), whose sum is σ = 330400728. Its totient is φ = 180752000.

The previous prime is 249512279. The next prime is 249512293. The reversal of 249512285 is 582215942.

It can be written as a sum of positive squares in 4 ways, for example, as 25381444 + 224130841 = 5038^2 + 14971^2 .

It is not a de Polignac number, because 249512285 - 2¹⁴ = 249495901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 191135 + ... + 192435.

It is an arithmetic number, because the mean of its divisors is an integer number (13766697).

Almost surely, 2^249512285 is an apocalyptic number.

It is an amenable number.

249512285 is a deficient number, since it is larger than the sum of its proper divisors (80888443).

249512285 is a wasteful number, since it uses less digits than its factorization.

249512285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1645 (or 1634 counting only the distinct ones).

The product of its digits is 57600, while the sum is 38.

The square root of 249512285 is about 15795.9578690246. The cubic root of 249512285 is about 629.5506033353.

The spelling of 249512285 in words is "two hundred forty-nine million, five hundred twelve thousand, two hundred eighty-five".