288932225 has 6 divisors (see below), whose sum is σ = 358275990. Its totient is φ = 231145760.

The previous prime is 288932219. The next prime is 288932243. The reversal of 288932225 is 522239882.

It can be written as a sum of positive squares in 3 ways, for example, as 238144 + 288694081 = 488^2 + 16991^2 .

It is not a de Polignac number, because 288932225 - 2²⁸ = 20496769 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5778620 + ... + 5778669.

It is an arithmetic number, because the mean of its divisors is an integer number (59712665).

Almost surely, 2^288932225 is an apocalyptic number.

288932225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

288932225 is a deficient number, since it is larger than the sum of its proper divisors (69343765).

288932225 is a wasteful number, since it uses less digits than its factorization.

288932225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11557299 (or 11557294 counting only the distinct ones).

The product of its digits is 138240, while the sum is 41.

The square root of 288932225 is about 16998.0065007636. The cubic root of 288932225 is about 661.0972145677.

The spelling of 288932225 in words is "two hundred eighty-eight million, nine hundred thirty-two thousand, two hundred twenty-five".