287849225 has 12 divisors (see below), whose sum is σ = 357198864. Its totient is φ = 230107920.

The previous prime is 287849213. The next prime is 287849231. The reversal of 287849225 is 522948782.

It is not a de Polignac number, because 287849225 - 2¹⁰ = 287848201 is a prime.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 287849225.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38222 + ... + 45128.

It is an arithmetic number, because the mean of its divisors is an integer number (29766572).

Almost surely, 2^287849225 is an apocalyptic number.

287849225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

287849225 is a deficient number, since it is larger than the sum of its proper divisors (69349639).

287849225 is a wasteful number, since it uses less digits than its factorization.

287849225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8584 (or 8579 counting only the distinct ones).

The product of its digits is 645120, while the sum is 47.

The square root of 287849225 is about 16966.1199158794. The cubic root of 287849225 is about 660.2701870510.

The spelling of 287849225 in words is "two hundred eighty-seven million, eight hundred forty-nine thousand, two hundred twenty-five".