17123412725 has 12 divisors (see below), whose sum is σ = 21244877220. Its totient is φ = 13691088000.

The previous prime is 17123412721. The next prime is 17123412739. The reversal of 17123412725 is 52721432171.

It can be written as a sum of positive squares in 6 ways, for example, as 1630382884 + 15493029841 = 40378^2 + 124471^2 .

It is not a de Polignac number, because 17123412725 - 2² = 17123412721 is a prime.

It is a super-2 number, since 2×17123412725² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17123412721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 145130 + ... + 235179.

It is an arithmetic number, because the mean of its divisors is an integer number (1770406435).

Almost surely, 2^17123412725 is an apocalyptic number.

It is an amenable number.

17123412725 is a deficient number, since it is larger than the sum of its proper divisors (4121464495).

17123412725 is a wasteful number, since it uses less digits than its factorization.

17123412725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382120 (or 382115 counting only the distinct ones).

The product of its digits is 23520, while the sum is 35.

Adding to 17123412725 its reverse (52721432171), we get a palindrome (69844844896).

The spelling of 17123412725 in words is "seventeen billion, one hundred twenty-three million, four hundred twelve thousand, seven hundred twenty-five".