725241666 has 32 divisors (see below), whose sum is σ = 1529242560. Its totient is φ = 228661056.

The previous prime is 725241623. The next prime is 725241667. The reversal of 725241666 is 666142527.

725241666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (725241667) 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, 72480 + ... + 81876.

It is an arithmetic number, because the mean of its divisors is an integer number (47788830).

Almost surely, 2^725241666 is an apocalyptic number.

725241666 is an abundant number, since it is smaller than the sum of its proper divisors (804000894).

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

725241666 is a wasteful number, since it uses less digits than its factorization.

725241666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10098.

The product of its digits is 120960, while the sum is 39.

The square root of 725241666 is about 26930.3112867267. The cubic root of 725241666 is about 898.4506949730.

The spelling of 725241666 in words is "seven hundred twenty-five million, two hundred forty-one thousand, six hundred sixty-six".