125529107161 has 2 divisors, whose sum is σ = 125529107162. Its totient is φ = 125529107160.

The previous prime is 125529107153. The next prime is 125529107177. The reversal of 125529107161 is 161701925521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89921417161 + 35607690000 = 299869^2 + 188700^2 .

It is a cyclic number.

It is not a de Polignac number, because 125529107161 - 2³ = 125529107153 is a prime.

It is not a weakly prime, because it can be changed into another prime (125529167161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62764553580 + 62764553581.

It is an arithmetic number, because the mean of its divisors is an integer number (62764553581).

Almost surely, 2^125529107161 is an apocalyptic number.

It is an amenable number.

125529107161 is a deficient number, since it is larger than the sum of its proper divisors (1).

125529107161 is an equidigital number, since it uses as much as digits as its factorization.

125529107161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37800, while the sum is 40.

The spelling of 125529107161 in words is "one hundred twenty-five billion, five hundred twenty-nine million, one hundred seven thousand, one hundred sixty-one".