168425239515625 has 49 divisors (see below), whose sum is σ = 215105568820507. Its totient is φ = 131873379025000.

The previous prime is 168425239515601. The next prime is 168425239515629. The reversal of 168425239515625 is 526515932524861.

It is a happy number.

The square root of 168425239515625 is 12977875.

The cubic root of 168425239515625 is 55225.

It is a perfect power (a square, a cube, a 6-th power), and thus also a powerful number.

It can be written as a sum of positive squares in 3 ways, for example, as 147556678638681 + 20868560876944 = 12147291^2 + 4568212^2 .

It is not a de Polignac number, because 168425239515625 - 2¹⁷ = 168425239384553 is a prime.

It is a super-3 number, since 3×168425239515625³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168425239515629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 48 ways as a sum of consecutive naturals, for example, 3583515734352 + ... + 3583515734398.

Almost surely, 2^{168425239515625} is an apocalyptic number.

168425239515625 is the 12977875-th square number.

168425239515625 is the 6488938-th centered octagonal number.

It is an amenable number.

168425239515625 is a deficient number, since it is larger than the sum of its proper divisors (46680329304882).

168425239515625 is an frugal number, since it uses more digits than its factorization.

168425239515625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312 (or 52 counting only the distinct ones).

The product of its digits is 155520000, while the sum is 64.

The spelling of 168425239515625 in words is "one hundred sixty-eight trillion, four hundred twenty-five billion, two hundred thirty-nine million, five hundred fifteen thousand, six hundred twenty-five".