108679012225 has 27 divisors (see below), whose sum is σ = 156780575427. Its totient is φ = 74514839280.

The previous prime is 108679012219. The next prime is 108679012271. The reversal of 108679012225 is 522210976801.

The square root of 108679012225 is 329665.

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

It can be written as a sum of positive squares in only one way, i.e., 39124444401 + 69554567824 = 197799^2 + 263732^2 .

It is not a de Polignac number, because 108679012225 - 2³ = 108679012217 is a prime.

It is a super-2 number, since 2×108679012225² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 11533566 + ... + 11542984.

Almost surely, 2^108679012225 is an apocalyptic number.

108679012225 is the 329665-th square number.

108679012225 is the 164833-rd centered octagonal number.

It is an amenable number.

108679012225 is a deficient number, since it is larger than the sum of its proper divisors (48101563202).

108679012225 is an frugal number, since it uses more digits than its factorization.

108679012225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18862 (or 9431 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 43.

The spelling of 108679012225 in words is "one hundred eight billion, six hundred seventy-nine million, twelve thousand, two hundred twenty-five".