125358161 has 4 divisors (see below), whose sum is σ = 125835072. Its totient is φ = 124881252.

The previous prime is 125358157. The next prime is 125358169. The reversal of 125358161 is 161853521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 161853521 = 97 ⋅1668593.

It is a cyclic number.

It is not a de Polignac number, because 125358161 - 2² = 125358157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125358169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 238061 + ... + 238586.

It is an arithmetic number, because the mean of its divisors is an integer number (31458768).

Almost surely, 2^125358161 is an apocalyptic number.

It is an amenable number.

125358161 is a deficient number, since it is larger than the sum of its proper divisors (476911).

125358161 is an equidigital number, since it uses as much as digits as its factorization.

125358161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476910.

The product of its digits is 7200, while the sum is 32.

The square root of 125358161 is about 11196.3458771154. The cubic root of 125358161 is about 500.4770926205.

The spelling of 125358161 in words is "one hundred twenty-five million, three hundred fifty-eight thousand, one hundred sixty-one".