725146 has 8 divisors (see below), whose sum is σ = 1108404. Its totient is φ = 355680.

The previous prime is 725119. The next prime is 725147. The reversal of 725146 is 641527.

It can be written as a sum of positive squares in 2 ways, for example, as 680625 + 44521 = 825^2 + 211^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 725146.

It is not an unprimeable number, because it can be changed into a prime (725147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3315 + ... + 3526.

2⁷²⁵¹⁴⁶ is an apocalyptic number.

725146 is a deficient number, since it is larger than the sum of its proper divisors (383258).

725146 is a wasteful number, since it uses less digits than its factorization.

725146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6896.

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

The square root of 725146 is about 851.5550481325. Note that the first 3 decimals coincide. The cubic root of 725146 is about 89.8411188618.

The spelling of 725146 in words is "seven hundred twenty-five thousand, one hundred forty-six".