725405880889 has 8 divisors (see below), whose sum is σ = 740120768640. Its totient is φ = 710729066736.

The previous prime is 725405880877. The next prime is 725405880919. The reversal of 725405880889 is 988088504527.

725405880889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 725405880889 - 2⁹ = 725405880377 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 725405880889.

It is not an unprimeable number, because it can be changed into a prime (725405880389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9479907 + ... + 9556120.

It is an arithmetic number, because the mean of its divisors is an integer number (92515096080).

Almost surely, 2^725405880889 is an apocalyptic number.

It is an amenable number.

725405880889 is a deficient number, since it is larger than the sum of its proper divisors (14714887751).

725405880889 is a wasteful number, since it uses less digits than its factorization.

725405880889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19036799.

The product of its (nonzero) digits is 51609600, while the sum is 64.

The spelling of 725405880889 in words is "seven hundred twenty-five billion, four hundred five million, eight hundred eighty thousand, eight hundred eighty-nine".