725860189 has 4 divisors (see below), whose sum is σ = 725918940. Its totient is φ = 725801440.

The previous prime is 725860183. The next prime is 725860199. The reversal of 725860189 is 981068527.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 981068527 = 3169 ⋅309583.

It can be written as a sum of positive squares in 2 ways, for example, as 220284964 + 505575225 = 14842^2 + 22485^2 .

It is a cyclic number.

It is not a de Polignac number, because 725860189 - 2⁷ = 725860061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725860183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2872 + ... + 38209.

It is an arithmetic number, because the mean of its divisors is an integer number (181479735).

Almost surely, 2^725860189 is an apocalyptic number.

It is an amenable number.

725860189 is a deficient number, since it is larger than the sum of its proper divisors (58751).

725860189 is a wasteful number, since it uses less digits than its factorization.

725860189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58750.

The product of its (nonzero) digits is 241920, while the sum is 46.

The square root of 725860189 is about 26941.7926092530. The cubic root of 725860189 is about 898.7060372220.

The spelling of 725860189 in words is "seven hundred twenty-five million, eight hundred sixty thousand, one hundred eighty-nine".