289177225 has 12 divisors (see below), whose sum is σ = 379673244. Its totient is φ = 217733120.

The previous prime is 289177211. The next prime is 289177267. The reversal of 289177225 is 522771982.

It can be written as a sum of positive squares in 6 ways, for example, as 41209 + 289136016 = 203^2 + 17004^2 .

It is not a de Polignac number, because 289177225 - 2²⁵ = 255622793 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 339784 + ... + 340633.

It is an arithmetic number, because the mean of its divisors is an integer number (31639437).

Almost surely, 2^289177225 is an apocalyptic number.

289177225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

289177225 is a deficient number, since it is larger than the sum of its proper divisors (90496019).

289177225 is a wasteful number, since it uses less digits than its factorization.

289177225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680444 (or 680439 counting only the distinct ones).

The product of its digits is 141120, while the sum is 43.

The square root of 289177225 is about 17005.2117011227. The cubic root of 289177225 is about 661.2840208434.

It can be divided in two parts, 2891772 and 25, that multiplied together give a triangular number (72294300 = T₁₂₀₂₄).

The spelling of 289177225 in words is "two hundred eighty-nine million, one hundred seventy-seven thousand, two hundred twenty-five".