287293025 has 12 divisors (see below), whose sum is σ = 356854764. Its totient is φ = 229440000.

The previous prime is 287293021. The next prime is 287293063. The reversal of 287293025 is 520392782.

It can be written as a sum of positive squares in 6 ways, for example, as 18464209 + 268828816 = 4297^2 + 16396^2 .

It is not a de Polignac number, because 287293025 - 2² = 287293021 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 287293025.

It is not an unprimeable number, because it can be changed into a prime (287293021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5465 + ... + 24585.

It is an arithmetic number, because the mean of its divisors is an integer number (29737897).

Almost surely, 2^287293025 is an apocalyptic number.

287293025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

287293025 is a deficient number, since it is larger than the sum of its proper divisors (69561739).

287293025 is a wasteful number, since it uses less digits than its factorization.

287293025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19732 (or 19727 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 287293025 is about 16949.7204991705. The cubic root of 287293025 is about 659.8446412717.

The spelling of 287293025 in words is "two hundred eighty-seven million, two hundred ninety-three thousand, twenty-five".