725047641 has 6 divisors (see below), whose sum is σ = 1047291050. Its totient is φ = 483365088.

The previous prime is 725047621. The next prime is 725047679. The reversal of 725047641 is 146740527.

725047641 is a `hidden beast` number, since 7 + 2 + 5 + 0 + 4 + 7 + 641 = 666.

It can be written as a sum of positive squares in only one way, i.e., 681210000 + 43837641 = 26100^2 + 6621^2 .

It is not a de Polignac number, because 725047641 - 2⁷ = 725047513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 725047596 and 725047605.

It is not an unprimeable number, because it can be changed into a prime (725047621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40280416 + ... + 40280433.

Almost surely, 2^725047641 is an apocalyptic number.

It is an amenable number.

725047641 is a deficient number, since it is larger than the sum of its proper divisors (322243409).

725047641 is a wasteful number, since it uses less digits than its factorization.

725047641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80560855 (or 80560852 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 725047641 is about 26926.7086923003. The cubic root of 725047641 is about 898.3705665358.

The spelling of 725047641 in words is "seven hundred twenty-five million, forty-seven thousand, six hundred forty-one".