725266644 has 24 divisors (see below), whose sum is σ = 1700798400. Its totient is φ = 240539904.

The previous prime is 725266643. The next prime is 725266667. The reversal of 725266644 is 446662527.

725266644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 725266596 and 725266605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725266643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149469 + ... + 154244.

It is an arithmetic number, because the mean of its divisors is an integer number (70866600).

Almost surely, 2^725266644 is an apocalyptic number.

It is an amenable number.

725266644 is an abundant number, since it is smaller than the sum of its proper divisors (975531756).

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

725266644 is a wasteful number, since it uses less digits than its factorization.

725266644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303919 (or 303917 counting only the distinct ones).

The product of its digits is 483840, while the sum is 42.

The square root of 725266644 is about 26930.7750352640. The cubic root of 725266644 is about 898.4610093482.

The spelling of 725266644 in words is "seven hundred twenty-five million, two hundred sixty-six thousand, six hundred forty-four".