725331222 has 72 divisors (see below), whose sum is σ = 1994351112. Its totient is φ = 188395200.

The previous prime is 725331203. The next prime is 725331241. The reversal of 725331222 is 222133527.

It is a happy number.

725331222 is a `hidden beast` number, since 7 + 2 + 533 + 122 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (725331203) and next prime (725331241).

It is a super-2 number, since 2×725331222² = 1052210763216026568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 27679 + ... + 47082.

It is an arithmetic number, because the mean of its divisors is an integer number (27699321).

Almost surely, 2^725331222 is an apocalyptic number.

725331222 is an abundant number, since it is smaller than the sum of its proper divisors (1269019890).

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

725331222 is a wasteful number, since it uses less digits than its factorization.

725331222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74794 (or 74784 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 725331222 is about 26931.9739714712. The cubic root of 725331222 is about 898.4876749861.

Adding to 725331222 its reverse (222133527), we get a palindrome (947464749).

The spelling of 725331222 in words is "seven hundred twenty-five million, three hundred thirty-one thousand, two hundred twenty-two".