689819225 has 24 divisors (see below), whose sum is σ = 911295840. Its totient is φ = 516481920.

The previous prime is 689819159. The next prime is 689819227. The reversal of 689819225 is 522918986.

It is not a de Polignac number, because 689819225 - 2¹⁸ = 689557081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (689819227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30677 + ... + 48173.

It is an arithmetic number, because the mean of its divisors is an integer number (37970660).

Almost surely, 2^689819225 is an apocalyptic number.

It is an amenable number.

689819225 is a deficient number, since it is larger than the sum of its proper divisors (221476615).

689819225 is a wasteful number, since it uses less digits than its factorization.

689819225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17609 (or 17604 counting only the distinct ones).

The product of its digits is 622080, while the sum is 50.

The square root of 689819225 is about 26264.4098544018. The cubic root of 689819225 is about 883.5784150461.

The spelling of 689819225 in words is "six hundred eighty-nine million, eight hundred nineteen thousand, two hundred twenty-five".