725481 has 12 divisors (see below), whose sum is σ = 1056900. Its totient is φ = 479520.

The previous prime is 725479. The next prime is 725507. The reversal of 725481 is 184527.

725481 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 2 ways, for example, as 176400 + 549081 = 420^2 + 741^2 .

It is not a de Polignac number, because 725481 - 2¹ = 725479 is a prime.

It is a super-2 number, since 2×725481² = 1052645362722, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 725481.

It is not an unprimeable number, because it can be changed into a prime (725381) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1071 + ... + 1611.

It is an arithmetic number, because the mean of its divisors is an integer number (88075).

2⁷²⁵⁴⁸¹ is an apocalyptic number.

It is an amenable number.

725481 is a deficient number, since it is larger than the sum of its proper divisors (331419).

725481 is a wasteful number, since it uses less digits than its factorization.

725481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696 (or 693 counting only the distinct ones).

The product of its digits is 2240, while the sum is 27.

The square root of 725481 is about 851.7517243892. The cubic root of 725481 is about 89.8549515435.

The spelling of 725481 in words is "seven hundred twenty-five thousand, four hundred eighty-one".