125520206161 has 8 divisors (see below), whose sum is σ = 143456660480. Its totient is φ = 107585000928.

The previous prime is 125520206143. The next prime is 125520206177. The reversal of 125520206161 is 161602025521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 125520206161 - 2⁹ = 125520205649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125520209161) 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 7 ways as a sum of consecutive naturals, for example, 86001 + ... + 508366.

It is an arithmetic number, because the mean of its divisors is an integer number (17932082560).

Almost surely, 2^125520206161 is an apocalyptic number.

It is an amenable number.

125520206161 is a deficient number, since it is larger than the sum of its proper divisors (17936454319).

125520206161 is an equidigital number, since it uses as much as digits as its factorization.

125520206161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624543.

The product of its (nonzero) digits is 7200, while the sum is 31.

The spelling of 125520206161 in words is "one hundred twenty-five billion, five hundred twenty million, two hundred six thousand, one hundred sixty-one".