287901325 has 6 divisors (see below), whose sum is σ = 356997674. Its totient is φ = 230321040.

The previous prime is 287901323. The next prime is 287901331. The reversal of 287901325 is 523109782.

It can be written as a sum of positive squares in 3 ways, for example, as 56169 + 287845156 = 237^2 + 16966^2 .

It is not a de Polignac number, because 287901325 - 2¹ = 287901323 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287901323) 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 5 ways as a sum of consecutive naturals, for example, 5758002 + ... + 5758051.

Almost surely, 2^287901325 is an apocalyptic number.

287901325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

287901325 is a deficient number, since it is larger than the sum of its proper divisors (69096349).

287901325 is a wasteful number, since it uses less digits than its factorization.

287901325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11516063 (or 11516058 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 287901325 is about 16967.6552593456. The cubic root of 287901325 is about 660.3100204065.

The spelling of 287901325 in words is "two hundred eighty-seven million, nine hundred one thousand, three hundred twenty-five".