720865087025 has 6 divisors (see below), whose sum is σ = 893872707942. Its totient is φ = 576692069600.

The previous prime is 720865087009. The next prime is 720865087099. The reversal of 720865087025 is 520780568027.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 131374351936 + 589490735089 = 362456^2 + 767783^2 .

It is not a de Polignac number, because 720865087025 - 2⁴ = 720865087009 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14417301716 + ... + 14417301765.

It is an arithmetic number, because the mean of its divisors is an integer number (148978784657).

Almost surely, 2^720865087025 is an apocalyptic number.

It is an amenable number.

720865087025 is a deficient number, since it is larger than the sum of its proper divisors (173007620917).

720865087025 is a wasteful number, since it uses less digits than its factorization.

720865087025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28834603491 (or 28834603486 counting only the distinct ones).

The product of its (nonzero) digits is 1881600, while the sum is 50.

The spelling of 720865087025 in words is "seven hundred twenty billion, eight hundred sixty-five million, eighty-seven thousand, twenty-five".