725656625 has 8 divisors (see below), whose sum is σ = 905619624. Its totient is φ = 580525200.

The previous prime is 725656621. The next prime is 725656627. The reversal of 725656625 is 526656527.

It can be written as a sum of positive squares in 4 ways, for example, as 43454464 + 682202161 = 6592^2 + 26119^2 .

It is not a de Polignac number, because 725656625 - 2² = 725656621 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (725656621) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2902502 + ... + 2902751.

It is an arithmetic number, because the mean of its divisors is an integer number (113202453).

Almost surely, 2^725656625 is an apocalyptic number.

It is an amenable number.

725656625 is a deficient number, since it is larger than the sum of its proper divisors (179962999).

725656625 is an equidigital number, since it uses as much as digits as its factorization.

725656625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5805268 (or 5805258 counting only the distinct ones).

The product of its digits is 756000, while the sum is 44.

The square root of 725656625 is about 26938.0144962467. The cubic root of 725656625 is about 898.6220167714.

The spelling of 725656625 in words is "seven hundred twenty-five million, six hundred fifty-six thousand, six hundred twenty-five".