725847660 has 72 divisors (see below), whose sum is σ = 2208272976. Its totient is φ = 192984960.

The previous prime is 725847659. The next prime is 725847673. The reversal of 725847660 is 66748527.

725847660 is a `hidden beast` number, since 7 + 2 + 584 + 7 + 6 + 60 = 666.

725847660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56650 + ... + 68270.

It is an arithmetic number, because the mean of its divisors is an integer number (30670458).

Almost surely, 2^725847660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 725847660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1104136488).

725847660 is an abundant number, since it is smaller than the sum of its proper divisors (1482425316).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

725847660 is a wasteful number, since it uses less digits than its factorization.

725847660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11983 (or 11978 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 45.

The square root of 725847660 is about 26941.5600884581. The cubic root of 725847660 is about 898.7008663673.

The spelling of 725847660 in words is "seven hundred twenty-five million, eight hundred forty-seven thousand, six hundred sixty".