725526 has 24 divisors (see below), whose sum is σ = 1665144. Its totient is φ = 227520.

The previous prime is 725519. The next prime is 725531. The reversal of 725526 is 625527.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 725526.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 880 + ... + 1491.

It is an arithmetic number, because the mean of its divisors is an integer number (69381).

2⁷²⁵⁵²⁶ is an apocalyptic number.

725526 is an abundant number, since it is smaller than the sum of its proper divisors (939618).

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

725526 is a wasteful number, since it uses less digits than its factorization.

725526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2396 (or 2393 counting only the distinct ones).

The product of its digits is 4200, while the sum is 27.

The square root of 725526 is about 851.7781401281. The cubic root of 725526 is about 89.8568093405.

Subtracting from 725526 its reverse (625527), we obtain a palindrome (99999).

The spelling of 725526 in words is "seven hundred twenty-five thousand, five hundred twenty-six".