287386725 has 24 divisors (see below), whose sum is σ = 495807552. Its totient is φ = 146608000.

The previous prime is 287386721. The next prime is 287386727. The reversal of 287386725 is 527683782.

It is not a de Polignac number, because 287386725 - 2² = 287386721 is a prime.

It is a super-2 number, since 2×287386725² = 165182259412451250, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287386721) 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, 81576 + ... + 85025.

It is an arithmetic number, because the mean of its divisors is an integer number (20658648).

Almost surely, 2^287386725 is an apocalyptic number.

287386725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

287386725 is a deficient number, since it is larger than the sum of its proper divisors (208420827).

287386725 is a wasteful number, since it uses less digits than its factorization.

287386725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166637 (or 166632 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 48.

The square root of 287386725 is about 16952.4843312123. The cubic root of 287386725 is about 659.9163691094.

It can be divided in two parts, 2873 and 86725, that added together give a palindrome (89598).

The spelling of 287386725 in words is "two hundred eighty-seven million, three hundred eighty-six thousand, seven hundred twenty-five".