725805523 has 8 divisors (see below), whose sum is σ = 737358336. Its totient is φ = 714289800.

The previous prime is 725805499. The next prime is 725805541. The reversal of 725805523 is 325508527.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-725805523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (725805623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31590 + ... + 49492.

It is an arithmetic number, because the mean of its divisors is an integer number (92169792).

Almost surely, 2^725805523 is an apocalyptic number.

725805523 is a deficient number, since it is larger than the sum of its proper divisors (11552813).

725805523 is a wasteful number, since it uses less digits than its factorization.

725805523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18545.

The product of its (nonzero) digits is 84000, while the sum is 37.

The square root of 725805523 is about 26940.7780696846. The cubic root of 725805523 is about 898.6834755320.

The spelling of 725805523 in words is "seven hundred twenty-five million, eight hundred five thousand, five hundred twenty-three".