725173536 has 96 divisors (see below), whose sum is σ = 1989489600. Its totient is φ = 230988800.

The previous prime is 725173511. The next prime is 725173549. The reversal of 725173536 is 635371527.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 725173494 and 725173503.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 279895 + ... + 282473.

It is an arithmetic number, because the mean of its divisors is an integer number (20723850).

Almost surely, 2^725173536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 725173536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (994744800).

725173536 is an abundant number, since it is smaller than the sum of its proper divisors (1264316064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

725173536 is a wasteful number, since it uses less digits than its factorization.

725173536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2722 (or 2714 counting only the distinct ones).

The product of its digits is 132300, while the sum is 39.

The square root of 725173536 is about 26929.0463254828. The cubic root of 725173536 is about 898.4225602764.

The spelling of 725173536 in words is "seven hundred twenty-five million, one hundred seventy-three thousand, five hundred thirty-six".