725710482181 has 8 divisors (see below), whose sum is σ = 768412557720. Its totient is φ = 683009875968.

The previous prime is 725710482169. The next prime is 725710482191. The reversal of 725710482181 is 181284017527.

It can be written as a sum of positive squares in 4 ways, for example, as 328065472900 + 397645009281 = 572770^2 + 630591^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 725710482181 - 2¹³ = 725710473989 is a prime.

It is a super-2 number, since 2×725710482181² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725710482131) 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, 745975 + ... + 1417003.

It is an arithmetic number, because the mean of its divisors is an integer number (96051569715).

Almost surely, 2^725710482181 is an apocalyptic number.

It is an amenable number.

725710482181 is a deficient number, since it is larger than the sum of its proper divisors (42702075539).

725710482181 is a wasteful number, since it uses less digits than its factorization.

725710482181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734663.

The product of its (nonzero) digits is 250880, while the sum is 46.

The spelling of 725710482181 in words is "seven hundred twenty-five billion, seven hundred ten million, four hundred eighty-two thousand, one hundred eighty-one".