725945 has 16 divisors (see below), whose sum is σ = 969408. Its totient is φ = 517440.

The previous prime is 725939. The next prime is 725953. The reversal of 725945 is 549527.

It is not a de Polignac number, because 725945 - 2⁴ = 725929 is a prime.

It is a super-2 number, since 2×725945² = 1053992286050, which contains 22 as substring.

Its product of digits (12600) is a multiple of the sum of its prime divisors (280).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3587 + ... + 3783.

It is an arithmetic number, because the mean of its divisors is an integer number (60588).

2⁷²⁵⁹⁴⁵ is an apocalyptic number.

It is an amenable number.

725945 is a deficient number, since it is larger than the sum of its proper divisors (243463).

725945 is a wasteful number, since it uses less digits than its factorization.

725945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280.

The product of its digits is 12600, while the sum is 32.

The square root of 725945 is about 852.0240606931. The cubic root of 725945 is about 89.8741038081.

It can be divided in two parts, 7 and 25945, that added together give a palindrome (25952).

The spelling of 725945 in words is "seven hundred twenty-five thousand, nine hundred forty-five".