287425 has 6 divisors (see below), whose sum is σ = 356438. Its totient is φ = 229920.

The previous prime is 287393. The next prime is 287437. The reversal of 287425 is 524782.

It can be written as a sum of positive squares in 3 ways, for example, as 25281 + 262144 = 159^2 + 512^2 .

It is not a de Polignac number, because 287425 - 2⁵ = 287393 is a prime.

It is a super-2 number, since 2×287425² = 165226261250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 287393 and 287402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5724 + ... + 5773.

2²⁸⁷⁴²⁵ is an apocalyptic number.

287425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

287425 is a deficient number, since it is larger than the sum of its proper divisors (69013).

287425 is a wasteful number, since it uses less digits than its factorization.

287425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11507 (or 11502 counting only the distinct ones).

The product of its digits is 4480, while the sum is 28.

The square root of 287425 is about 536.1203223158. The cubic root of 287425 is about 65.9945664336.

The spelling of 287425 in words is "two hundred eighty-seven thousand, four hundred twenty-five".