125010181 has 2 divisors, whose sum is σ = 125010182. Its totient is φ = 125010180.

The previous prime is 125010121. The next prime is 125010187. The reversal of 125010181 is 181010521.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124679556 + 330625 = 11166^2 + 575^2 .

It is a cyclic number.

It is not a de Polignac number, because 125010181 - 2¹¹ = 125008133 is a prime.

It is a super-2 number, since 2×125010181² = 31255090707305522, which contains 22 as substring.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125010187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62505090 + 62505091.

It is an arithmetic number, because the mean of its divisors is an integer number (62505091).

Almost surely, 2^125010181 is an apocalyptic number.

It is an amenable number.

125010181 is a deficient number, since it is larger than the sum of its proper divisors (1).

125010181 is an equidigital number, since it uses as much as digits as its factorization.

125010181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80, while the sum is 19.

The square root of 125010181 is about 11180.7951863899. The cubic root of 125010181 is about 500.0135742981.

The spelling of 125010181 in words is "one hundred twenty-five million, ten thousand, one hundred eighty-one".