725123 has 8 divisors (see below), whose sum is σ = 840960. Its totient is φ = 612360.

The previous prime is 725119. The next prime is 725147. The reversal of 725123 is 321527.

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

It is not a de Polignac number, because 725123 - 2² = 725119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 725095 and 725104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725113) 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 7 ways as a sum of consecutive naturals, for example, 233 + ... + 1226.

It is an arithmetic number, because the mean of its divisors is an integer number (105120).

2⁷²⁵¹²³ is an apocalyptic number.

725123 is a deficient number, since it is larger than the sum of its proper divisors (115837).

725123 is a wasteful number, since it uses less digits than its factorization.

725123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1537.

The product of its digits is 420, while the sum is 20.

The square root of 725123 is about 851.5415433201. The cubic root of 725123 is about 89.8401689990.

It can be divided in two parts, 725 and 123, that added together give a palindrome (848).

The spelling of 725123 in words is "seven hundred twenty-five thousand, one hundred twenty-three".