725879389 has 4 divisors (see below), whose sum is σ = 726248160. Its totient is φ = 725510620.

The previous prime is 725879387. The next prime is 725879411. The reversal of 725879389 is 983978527.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 725879389 - 2¹ = 725879387 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725879383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181417 + ... + 185374.

It is an arithmetic number, because the mean of its divisors is an integer number (181562040).

Almost surely, 2^725879389 is an apocalyptic number.

It is an amenable number.

725879389 is a deficient number, since it is larger than the sum of its proper divisors (368771).

725879389 is a wasteful number, since it uses less digits than its factorization.

725879389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368770.

The product of its digits is 7620480, while the sum is 58.

The square root of 725879389 is about 26942.1489306254. The cubic root of 725879389 is about 898.7139611556.

The spelling of 725879389 in words is "seven hundred twenty-five million, eight hundred seventy-nine thousand, three hundred eighty-nine".