725526565 has 8 divisors (see below), whose sum is σ = 875144088. Its totient is φ = 577413120.

The previous prime is 725526551. The next prime is 725526583. The reversal of 725526565 is 565625527.

725526565 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 37933281 + 687593284 = 6159^2 + 26222^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 725526565 - 2²⁹ = 188655653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 374956 + ... + 376885.

It is an arithmetic number, because the mean of its divisors is an integer number (109393011).

Almost surely, 2^725526565 is an apocalyptic number.

It is an amenable number.

725526565 is a deficient number, since it is larger than the sum of its proper divisors (149617523).

725526565 is a wasteful number, since it uses less digits than its factorization.

725526565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 752039.

The product of its digits is 630000, while the sum is 43.

The square root of 725526565 is about 26935.6003274477. The cubic root of 725526565 is about 898.5683266565.

The spelling of 725526565 in words is "seven hundred twenty-five million, five hundred twenty-six thousand, five hundred sixty-five".