725539389796 has 45 divisors (see below), whose sum is σ = 1382513876205. Its totient is φ = 333014254560.

The previous prime is 725539389781. The next prime is 725539389847. The reversal of 725539389796 is 697983935527.

The square root of 725539389796 is 851786.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 7 ways, for example, as 234788702500 + 490750687296 = 484550^2 + 700536^2 .

It is a super-2 number, since 2×725539389796² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

Its product of digits (771573600) is a multiple of the sum of its prime divisors (196).

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 4008504826 + ... + 4008505006.

Almost surely, 2^725539389796 is an apocalyptic number.

725539389796 is the 851786-th square number.

It is an amenable number.

725539389796 is a deficient number, since it is larger than the sum of its proper divisors (656974486409).

725539389796 is an frugal number, since it uses more digits than its factorization.

725539389796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754 (or 196 counting only the distinct ones).

The product of its digits is 771573600, while the sum is 73.

The spelling of 725539389796 in words is "seven hundred twenty-five billion, five hundred thirty-nine million, three hundred eighty-nine thousand, seven hundred ninety-six".