725505526 has 8 divisors (see below), whose sum is σ = 1098242640. Its totient is φ = 359424648.

The previous prime is 725505497. The next prime is 725505533. The reversal of 725505526 is 625505527.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1663786 + ... + 1664221.

It is an arithmetic number, because the mean of its divisors is an integer number (137280330).

Almost surely, 2^725505526 is an apocalyptic number.

725505526 is a deficient number, since it is larger than the sum of its proper divisors (372737114).

725505526 is a wasteful number, since it uses less digits than its factorization.

725505526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3328118.

The product of its (nonzero) digits is 105000, while the sum is 37.

The square root of 725505526 is about 26935.2097819935. The cubic root of 725505526 is about 898.5596409365.

Subtracting from 725505526 its reverse (625505527), we obtain a palindrome (99999999).

The spelling of 725505526 in words is "seven hundred twenty-five million, five hundred five thousand, five hundred twenty-six".