125550281 has 2 divisors, whose sum is σ = 125550282. Its totient is φ = 125550280.

The previous prime is 125550259. The next prime is 125550317. The reversal of 125550281 is 182055521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101687056 + 23863225 = 10084^2 + 4885^2 .

It is a cyclic number.

It is not a de Polignac number, because 125550281 - 2²² = 121355977 is a prime.

It is a super-2 number, since 2×125550281² = 31525746118357922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (125550181) 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 as a sum of consecutive naturals, namely, 62775140 + 62775141.

It is an arithmetic number, because the mean of its divisors is an integer number (62775141).

Almost surely, 2^125550281 is an apocalyptic number.

It is an amenable number.

125550281 is a deficient number, since it is larger than the sum of its proper divisors (1).

125550281 is an equidigital number, since it uses as much as digits as its factorization.

125550281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4000, while the sum is 29.

The square root of 125550281 is about 11204.9221773290. The cubic root of 125550281 is about 500.7326339706.

The spelling of 125550281 in words is "one hundred twenty-five million, five hundred fifty thousand, two hundred eighty-one".