725757222 has 8 divisors (see below), whose sum is σ = 1451514456. Its totient is φ = 241919072.

The previous prime is 725757187. The next prime is 725757223. The reversal of 725757222 is 222757527.

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

725757222 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725757223) 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 3 ways as a sum of consecutive naturals, for example, 60479763 + ... + 60479774.

It is an arithmetic number, because the mean of its divisors is an integer number (181439307).

Almost surely, 2^725757222 is an apocalyptic number.

725757222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

725757222 is a wasteful number, since it uses less digits than its factorization.

725757222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120959542.

The product of its digits is 137200, while the sum is 39.

The square root of 725757222 is about 26939.8816255751. The cubic root of 725757222 is about 898.6635398550.

It can be divided in two parts, 72575 and 7222, that added together give a palindrome (79797).

The spelling of 725757222 in words is "seven hundred twenty-five million, seven hundred fifty-seven thousand, two hundred twenty-two".