125788680889 has 3 divisors (see below), whose sum is σ = 125789035557. Its totient is φ = 125788326222.

The previous prime is 125788680881. The next prime is 125788680947. The reversal of 125788680889 is 988086887521.

The square root of 125788680889 is 354667.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 125788680889 - 2³ = 125788680881 is a prime.

It is a super-3 number, since 3×125788680889³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125788680881) 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, 177334 + ... + 532000.

It is an arithmetic number, because the mean of its divisors is an integer number (41929678519).

Almost surely, 2^125788680889 is an apocalyptic number.

125788680889 is the 354667-th square number.

125788680889 is the 177334-th centered octagonal number.

It is an amenable number.

125788680889 is a deficient number, since it is larger than the sum of its proper divisors (354668).

125788680889 is an frugal number, since it uses more digits than its factorization.

125788680889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709334 (or 354667 counting only the distinct ones).

The product of its (nonzero) digits is 123863040, while the sum is 70.

The spelling of 125788680889 in words is "one hundred twenty-five billion, seven hundred eighty-eight million, six hundred eighty thousand, eight hundred eighty-nine".