725380 has 12 divisors (see below), whose sum is σ = 1523340. Its totient is φ = 290144.

The previous prime is 725371. The next prime is 725381. The reversal of 725380 is 83527.

It can be written as a sum of positive squares in 2 ways, for example, as 538756 + 186624 = 734^2 + 432^2 .

It is a super-2 number, since 2×725380² = 1052352288800, which contains 22 as substring.

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

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18115 + ... + 18154.

It is an arithmetic number, because the mean of its divisors is an integer number (126945).

2⁷²⁵³⁸⁰ is an apocalyptic number.

It is an amenable number.

725380 is an abundant number, since it is smaller than the sum of its proper divisors (797960).

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

725380 is a wasteful number, since it uses less digits than its factorization.

725380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36278 (or 36276 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 725380 is about 851.6924327479. The cubic root of 725380 is about 89.8507815417.

The spelling of 725380 in words is "seven hundred twenty-five thousand, three hundred eighty".