125266243 has 2 divisors, whose sum is σ = 125266244. Its totient is φ = 125266242.

The previous prime is 125266171. The next prime is 125266247. The reversal of 125266243 is 342662521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 125266243 - 2⁹ = 125265731 is a prime.

It is not a weakly prime, because it can be changed into another prime (125266247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62633121 + 62633122.

It is an arithmetic number, because the mean of its divisors is an integer number (62633122).

Almost surely, 2^125266243 is an apocalyptic number.

125266243 is a deficient number, since it is larger than the sum of its proper divisors (1).

125266243 is an equidigital number, since it uses as much as digits as its factorization.

125266243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 31.

The square root of 125266243 is about 11192.2403029956. The cubic root of 125266243 is about 500.3547389277.

It can be divided in two parts, 12526 and 6243, that added together give a square (18769 = 137²).

The spelling of 125266243 in words is "one hundred twenty-five million, two hundred sixty-six thousand, two hundred forty-three".