725663744 has 60 divisors (see below), whose sum is σ = 1563379104. Its totient is φ = 334823424.

The previous prime is 725663711. The next prime is 725663749. The reversal of 725663744 is 447366527.

It is a junction number, because it is equal to n+sod(n) for n = 725663695 and 725663704.

It is not an unprimeable number, because it can be changed into a prime (725663749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211289 + ... + 214695.

Almost surely, 2^725663744 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 725663744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (781689552).

725663744 is an abundant number, since it is smaller than the sum of its proper divisors (837715360).

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

725663744 is an equidigital number, since it uses as much as digits as its factorization.

725663744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3448 (or 3422 counting only the distinct ones).

The product of its digits is 846720, while the sum is 44.

The square root of 725663744 is about 26938.1466326100. The cubic root of 725663744 is about 898.6249553832.

The spelling of 725663744 in words is "seven hundred twenty-five million, six hundred sixty-three thousand, seven hundred forty-four".