620725165 has 16 divisors (see below), whose sum is σ = 790250688. Its totient is φ = 466442496.

The previous prime is 620725151. The next prime is 620725169. The reversal of 620725165 is 561527026.

It is a cyclic number.

It is not a de Polignac number, because 620725165 - 2¹⁹ = 620200877 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 620725165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620725169) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37474 + ... + 51436.

It is an arithmetic number, because the mean of its divisors is an integer number (49390668).

Almost surely, 2^620725165 is an apocalyptic number.

It is an amenable number.

620725165 is a deficient number, since it is larger than the sum of its proper divisors (169525523).

620725165 is a wasteful number, since it uses less digits than its factorization.

620725165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14508.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 620725165 is about 24914.3566041750. The cubic root of 620725165 is about 853.0342148069.

The spelling of 620725165 in words is "six hundred twenty million, seven hundred twenty-five thousand, one hundred sixty-five".