725125 has 8 divisors (see below), whose sum is σ = 905112. Its totient is φ = 580000.

The previous prime is 725119. The next prime is 725147. The reversal of 725125 is 521527.

It can be written as a sum of positive squares in 4 ways, for example, as 9409 + 715716 = 97^2 + 846^2 .

It is a de Polignac number, because none of the positive numbers 2^k-725125 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 725096 and 725105.

It is a congruent number.

It is an unprimeable number.

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, 2776 + ... + 3025.

It is an arithmetic number, because the mean of its divisors is an integer number (113139).

2⁷²⁵¹²⁵ is an apocalyptic number.

It is an amenable number.

725125 is a deficient number, since it is larger than the sum of its proper divisors (179987).

725125 is an equidigital number, since it uses as much as digits as its factorization.

725125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5816 (or 5806 counting only the distinct ones).

The product of its digits is 700, while the sum is 22.

The square root of 725125 is about 851.5427176601. The cubic root of 725125 is about 89.8402515966.

The spelling of 725125 in words is "seven hundred twenty-five thousand, one hundred twenty-five".