125751315671579 has 32 divisors (see below), whose sum is σ = 138406750272000. Its totient is φ = 113550358763520.

The previous prime is 125751315671567. The next prime is 125751315671593. The reversal of 125751315671579 is 975176513157521.

It is a cyclic number.

It is not a de Polignac number, because 125751315671579 - 2¹⁶ = 125751315606043 is a prime.

It is a super-2 number, since 2×125751315671579² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125751315676579) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 73334852 + ... + 75030014.

It is an arithmetic number, because the mean of its divisors is an integer number (4325210946000).

Almost surely, 2^{125751315671579} is an apocalyptic number.

125751315671579 is a deficient number, since it is larger than the sum of its proper divisors (12655434600421).

125751315671579 is a wasteful number, since it uses less digits than its factorization.

125751315671579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1695875.

The product of its digits is 69457500, while the sum is 65.

The spelling of 125751315671579 in words is "one hundred twenty-five trillion, seven hundred fifty-one billion, three hundred fifteen million, six hundred seventy-one thousand, five hundred seventy-nine".