625347689 has 4 divisors (see below), whose sum is σ = 637146756. Its totient is φ = 613548624.

The previous prime is 625347683. The next prime is 625347727. The reversal of 625347689 is 986743526.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 501760000 + 123587689 = 22400^2 + 11117^2 .

It is a cyclic number.

It is not a de Polignac number, because 625347689 - 2⁴ = 625347673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (625347683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5899454 + ... + 5899559.

It is an arithmetic number, because the mean of its divisors is an integer number (159286689).

Almost surely, 2^625347689 is an apocalyptic number.

It is an amenable number.

625347689 is a deficient number, since it is larger than the sum of its proper divisors (11799067).

625347689 is a wasteful number, since it uses less digits than its factorization.

625347689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11799066.

The product of its digits is 2177280, while the sum is 50.

The square root of 625347689 is about 25006.9528131678. The cubic root of 625347689 is about 855.1464879018.

The spelling of 625347689 in words is "six hundred twenty-five million, three hundred forty-seven thousand, six hundred eighty-nine".