725178 has 8 divisors (see below), whose sum is σ = 1450368. Its totient is φ = 241724.

The previous prime is 725161. The next prime is 725189. The reversal of 725178 is 871527.

It is a happy number.

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

725178 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60426 + ... + 60437.

It is an arithmetic number, because the mean of its divisors is an integer number (181296).

2⁷²⁵¹⁷⁸ is an apocalyptic number.

725178 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

725178 is a wasteful number, since it uses less digits than its factorization.

725178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120868.

The product of its digits is 3920, while the sum is 30.

The square root of 725178 is about 851.5738370805. The cubic root of 725178 is about 89.8424403766.

It can be divided in two parts, 725 and 178, that added together give a triangular number (903 = T₄₂).

The spelling of 725178 in words is "seven hundred twenty-five thousand, one hundred seventy-eight".