725143689 has 24 divisors (see below), whose sum is σ = 1068830880. Its totient is φ = 473608512.

The previous prime is 725143681. The next prime is 725143691. The reversal of 725143689 is 986341527.

725143689 is a `hidden beast` number, since 72 + 514 + 3 + 68 + 9 = 666.

It is not a de Polignac number, because 725143689 - 2³ = 725143681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (725143681) 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 23 ways as a sum of consecutive naturals, for example, 164022 + ... + 168384.

It is an arithmetic number, because the mean of its divisors is an integer number (44534620).

Almost surely, 2^725143689 is an apocalyptic number.

It is an amenable number.

725143689 is a deficient number, since it is larger than the sum of its proper divisors (343687191).

725143689 is a wasteful number, since it uses less digits than its factorization.

725143689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4741 (or 4738 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 725143689 is about 26928.4921412247. The cubic root of 725143689 is about 898.4102342217.

The spelling of 725143689 in words is "seven hundred twenty-five million, one hundred forty-three thousand, six hundred eighty-nine".