289766725 has 6 divisors (see below), whose sum is σ = 359310770. Its totient is φ = 231813360.

The previous prime is 289766713. The next prime is 289766747. The reversal of 289766725 is 527667982.

It can be written as a sum of positive squares in 3 ways, for example, as 63504961 + 226261764 = 7969^2 + 15042^2 .

It is not a de Polignac number, because 289766725 - 2²⁵ = 256212293 is a prime.

It is a congruent number.

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, 5795310 + ... + 5795359.

Almost surely, 2^289766725 is an apocalyptic number.

289766725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

289766725 is a deficient number, since it is larger than the sum of its proper divisors (69544045).

289766725 is a wasteful number, since it uses less digits than its factorization.

289766725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11590679 (or 11590674 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 52.

The square root of 289766725 is about 17022.5357981706. The cubic root of 289766725 is about 661.7330676600.

The spelling of 289766725 in words is "two hundred eighty-nine million, seven hundred sixty-six thousand, seven hundred twenty-five".