723625724521 has 24 divisors (see below), whose sum is σ = 858554013384. Its totient is φ = 607907139840.

The previous prime is 723625724519. The next prime is 723625724533. The reversal of 723625724521 is 125427526327.

It is a happy number.

723625724521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 300298520025 + 423327204496 = 547995^2 + 650636^2 .

It is not a de Polignac number, because 723625724521 - 2¹ = 723625724519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (723625724561) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2328751 + ... + 2621131.

It is an arithmetic number, because the mean of its divisors is an integer number (35773083891).

Almost surely, 2^723625724521 is an apocalyptic number.

It is an amenable number.

723625724521 is a deficient number, since it is larger than the sum of its proper divisors (134928288863).

723625724521 is a wasteful number, since it uses less digits than its factorization.

723625724521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293401 (or 293394 counting only the distinct ones).

The product of its digits is 1411200, while the sum is 46.

The spelling of 723625724521 in words is "seven hundred twenty-three billion, six hundred twenty-five million, seven hundred twenty-four thousand, five hundred twenty-one".