725546773541 has 6 divisors (see below), whose sum is σ = 770736538290. Its totient is φ = 682867551296.

The previous prime is 725546773487. The next prime is 725546773591. The reversal of 725546773541 is 145377645527.

It can be written as a sum of positive squares in 3 ways, for example, as 431490020641 + 294056752900 = 656879^2 + 542270^2 .

It is not a de Polignac number, because 725546773541 - 2³⁰ = 724473031717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725546773591) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1255270946 + ... + 1255271523.

It is an arithmetic number, because the mean of its divisors is an integer number (128456089715).

Almost surely, 2^725546773541 is an apocalyptic number.

It is an amenable number.

725546773541 is a deficient number, since it is larger than the sum of its proper divisors (45189764749).

725546773541 is a wasteful number, since it uses less digits than its factorization.

725546773541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2510542503 (or 2510542486 counting only the distinct ones).

The product of its digits is 24696000, while the sum is 56.

The spelling of 725546773541 in words is "seven hundred twenty-five billion, five hundred forty-six million, seven hundred seventy-three thousand, five hundred forty-one".