125984507859 has 12 divisors (see below), whose sum is σ = 207974425776. Its totient is φ = 71991147312.

The previous prime is 125984507843. The next prime is 125984507897. The reversal of 125984507859 is 958705489521.

125984507859 is a `hidden beast` number, since 1 + 25 + 98 + 450 + 78 + 5 + 9 = 666.

It is not a de Polignac number, because 125984507859 - 2⁴ = 125984507843 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63), and also a Moran number because the ratio is a prime number: 1999754093 = 125984507859 / (1 + 2 + 5 + 9 + 8 + 4 + 5 + 0 + 7 + 8 + 5 + 9).

It is a junction number, because it is equal to n+sod(n) for n = 125984507796 and 125984507805.

It is not an unprimeable number, because it can be changed into a prime (125984507459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 999876984 + ... + 999877109.

It is an arithmetic number, because the mean of its divisors is an integer number (17331202148).

Almost surely, 2^125984507859 is an apocalyptic number.

125984507859 is a deficient number, since it is larger than the sum of its proper divisors (81989917917).

125984507859 is a wasteful number, since it uses less digits than its factorization.

125984507859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1999754106 (or 1999754103 counting only the distinct ones).

The product of its (nonzero) digits is 36288000, while the sum is 63.

The spelling of 125984507859 in words is "one hundred twenty-five billion, nine hundred eighty-four million, five hundred seven thousand, eight hundred fifty-nine".