287937825 has 24 divisors (see below), whose sum is σ = 544066368. Its totient is φ = 131628480.

The previous prime is 287937821. The next prime is 287937833. The reversal of 287937825 is 528739782.

It is not a de Polignac number, because 287937825 - 2² = 287937821 is a prime.

It is not an unprimeable number, because it can be changed into a prime (287937821) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 273702 + ... + 274751.

It is an arithmetic number, because the mean of its divisors is an integer number (22669432).

Almost surely, 2^287937825 is an apocalyptic number.

287937825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

287937825 is a deficient number, since it is larger than the sum of its proper divisors (256128543).

287937825 is a wasteful number, since it uses less digits than its factorization.

287937825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548473 (or 548468 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 51.

The square root of 287937825 is about 16968.7308010941. The cubic root of 287937825 is about 660.3379238294.

It can be divided in two parts, 2879 and 37825, that added together give a palindrome (40704).

The spelling of 287937825 in words is "two hundred eighty-seven million, nine hundred thirty-seven thousand, eight hundred twenty-five".