725209089 has 16 divisors (see below), whose sum is σ = 1062555840. Its totient is φ = 436309760.

The previous prime is 725209073. The next prime is 725209099. The reversal of 725209089 is 980902527.

It is a cyclic number.

It is not a de Polignac number, because 725209089 - 2⁴ = 725209073 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 725209089.

It is not an unprimeable number, because it can be changed into a prime (725209049) 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, 75684 + ... + 84725.

It is an arithmetic number, because the mean of its divisors is an integer number (66409740).

Almost surely, 2^725209089 is an apocalyptic number.

It is an amenable number.

725209089 is a deficient number, since it is larger than the sum of its proper divisors (337346751).

725209089 is a wasteful number, since it uses less digits than its factorization.

725209089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160560.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 725209089 is about 26929.7064410290. The cubic root of 725209089 is about 898.4372423232.

The spelling of 725209089 in words is "seven hundred twenty-five million, two hundred nine thousand, eighty-nine".