125681790069 has 24 divisors (see below), whose sum is σ = 203396580192. Its totient is φ = 74112109920.

The previous prime is 125681790067. The next prime is 125681790079. The reversal of 125681790069 is 960097186521.

125681790069 is a `hidden beast` number, since 1 + 2 + 568 + 1 + 79 + 0 + 0 + 6 + 9 = 666.

It is not a de Polignac number, because 125681790069 - 2¹ = 125681790067 is a prime.

It is a super-2 number, since 2×125681790069² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 125681789997 and 125681790024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125681790067) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17151919 + ... + 17159244.

It is an arithmetic number, because the mean of its divisors is an integer number (8474857508).

Almost surely, 2^125681790069 is an apocalyptic number.

It is an amenable number.

125681790069 is a deficient number, since it is larger than the sum of its proper divisors (77714790123).

125681790069 is a wasteful number, since it uses less digits than its factorization.

125681790069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34311217 (or 34311214 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 54.

The spelling of 125681790069 in words is "one hundred twenty-five billion, six hundred eighty-one million, seven hundred ninety thousand, sixty-nine".