725051924440 has 16 divisors (see below), whose sum is σ = 1631366830080. Its totient is φ = 290020769760.

The previous prime is 725051924431. The next prime is 725051924447. The reversal of 725051924440 is 44429150527.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725051924447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9063149016 + ... + 9063149095.

It is an arithmetic number, because the mean of its divisors is an integer number (101960426880).

Almost surely, 2^725051924440 is an apocalyptic number.

It is an amenable number.

725051924440 is an abundant number, since it is smaller than the sum of its proper divisors (906314905640).

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

725051924440 is a wasteful number, since it uses less digits than its factorization.

725051924440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18126298122 (or 18126298118 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 43.

The spelling of 725051924440 in words is "seven hundred twenty-five billion, fifty-one million, nine hundred twenty-four thousand, four hundred forty".