725725310172 has 24 divisors (see below), whose sum is σ = 1693517187600. Its totient is φ = 241885846656.

The previous prime is 725725310171. The next prime is 725725310173. The reversal of 725725310172 is 271013527527.

It is an interprime number because it is at equal distance from previous prime (725725310171) and next prime (725725310173).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725725310171) 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, 2689647 + ... + 2947142.

It is an arithmetic number, because the mean of its divisors is an integer number (70563216150).

Almost surely, 2^725725310172 is an apocalyptic number.

It is an amenable number.

725725310172 is an abundant number, since it is smaller than the sum of its proper divisors (967791877428).

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

725725310172 is a wasteful number, since it uses less digits than its factorization.

725725310172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5647525 (or 5647523 counting only the distinct ones).

The product of its (nonzero) digits is 205800, while the sum is 42.

Adding to 725725310172 its reverse (271013527527), we get a palindrome (996738837699).

The spelling of 725725310172 in words is "seven hundred twenty-five billion, seven hundred twenty-five million, three hundred ten thousand, one hundred seventy-two".