287648981325 has 24 divisors (see below), whose sum is σ = 528421833600. Its totient is φ = 153412789680.

The previous prime is 287648981239. The next prime is 287648981353. The reversal of 287648981325 is 523189846782.

287648981325 is a `hidden beast` number, since 2 + 8 + 76 + 489 + 81 + 3 + 2 + 5 = 666.

It is not a de Polignac number, because 287648981325 - 2⁹ = 287648980813 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 213072645 + ... + 213073994.

It is an arithmetic number, because the mean of its divisors is an integer number (22017576400).

Almost surely, 2^287648981325 is an apocalyptic number.

287648981325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

287648981325 is a deficient number, since it is larger than the sum of its proper divisors (240772852275).

287648981325 is a wasteful number, since it uses less digits than its factorization.

287648981325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426146658 (or 426146647 counting only the distinct ones).

The product of its digits is 46448640, while the sum is 63.

The spelling of 287648981325 in words is "two hundred eighty-seven billion, six hundred forty-eight million, nine hundred eighty-one thousand, three hundred twenty-five".