287868425 has 24 divisors (see below), whose sum is σ = 386433600. Its totient is φ = 211464000.

The previous prime is 287868401. The next prime is 287868431. The reversal of 287868425 is 524868782.

It is a happy number.

It is not a de Polignac number, because 287868425 - 2¹⁰ = 287867401 is a prime.

It is a super-2 number, since 2×287868425² = 165736460223961250, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62450 + ... + 66900.

It is an arithmetic number, because the mean of its divisors is an integer number (16101400).

Almost surely, 2^287868425 is an apocalyptic number.

287868425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

287868425 is a deficient number, since it is larger than the sum of its proper divisors (98565175).

287868425 is a wasteful number, since it uses less digits than its factorization.

287868425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4673 (or 4668 counting only the distinct ones).

The product of its digits is 1720320, while the sum is 50.

The square root of 287868425 is about 16966.6857400024. The cubic root of 287868425 is about 660.2848670809.

The spelling of 287868425 in words is "two hundred eighty-seven million, eight hundred sixty-eight thousand, four hundred twenty-five".