287868625 has 16 divisors (see below), whose sum is σ = 391921920. Its totient is φ = 209358000.

The previous prime is 287868619. The next prime is 287868643. The reversal of 287868625 is 526868782.

It is not a de Polignac number, because 287868625 - 2⁵ = 287868593 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 103305 + ... + 106054.

It is an arithmetic number, because the mean of its divisors is an integer number (24495120).

Almost surely, 2^287868625 is an apocalyptic number.

287868625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

287868625 is a deficient number, since it is larger than the sum of its proper divisors (104053295).

287868625 is a wasteful number, since it uses less digits than its factorization.

287868625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209385 (or 209375 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 52.

The square root of 287868625 is about 16966.6916339044. The cubic root of 287868625 is about 660.2850199945.

The spelling of 287868625 in words is "two hundred eighty-seven million, eight hundred sixty-eight thousand, six hundred twenty-five".