125920689122 has 6 divisors (see below), whose sum is σ = 188881786443. Its totient is φ = 62960093642.

The previous prime is 125920689121. The next prime is 125920689217. The reversal of 125920689122 is 221986029521.

It can be written as a sum of positive squares in only one way, i.e., 62960344561 + 62960344561 = 250919^2 + 250919^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=250919.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125920689121) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 376379 + ... + 627297.

Almost surely, 2^125920689122 is an apocalyptic number.

125920689122 is a deficient number, since it is larger than the sum of its proper divisors (62961097321).

125920689122 is an frugal number, since it uses more digits than its factorization.

125920689122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501840 (or 250921 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 47.

The spelling of 125920689122 in words is "one hundred twenty-five billion, nine hundred twenty million, six hundred eighty-nine thousand, one hundred twenty-two".