725389056 has 216 divisors, whose sum is σ = 2450788704. Its totient is φ = 202014720.

The previous prime is 725389009. The next prime is 725389061. The reversal of 725389056 is 650983527.

It is a happy number.

It is a super-2 number, since 2×725389056² = 1052378565129142272, 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 (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 660700 + ... + 661796.

It is an arithmetic number, because the mean of its divisors is an integer number (11346244).

Almost surely, 2^725389056 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 725389056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1225394352).

725389056 is an abundant number, since it is smaller than the sum of its proper divisors (1725399648).

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

725389056 is a wasteful number, since it uses less digits than its factorization.

725389056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1167 (or 1150 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The square root of 725389056 is about 26933.0476552506. The cubic root of 725389056 is about 898.5115545386.

The spelling of 725389056 in words is "seven hundred twenty-five million, three hundred eighty-nine thousand, fifty-six".