125438081 has 2 divisors, whose sum is σ = 125438082. Its totient is φ = 125438080.

The previous prime is 125438063. The next prime is 125438099. The reversal of 125438081 is 180834521.

It is a balanced prime because it is at equal distance from previous prime (125438063) and next prime (125438099).

It can be written as a sum of positive squares in only one way, i.e., 121903681 + 3534400 = 11041^2 + 1880^2 .

It is a cyclic number.

It is not a de Polignac number, because 125438081 - 2¹⁸ = 125175937 is a prime.

It is a super-2 number, since 2×125438081² = 31469424329925122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (125438381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62719040 + 62719041.

It is an arithmetic number, because the mean of its divisors is an integer number (62719041).

Almost surely, 2^125438081 is an apocalyptic number.

It is an amenable number.

125438081 is a deficient number, since it is larger than the sum of its proper divisors (1).

125438081 is an equidigital number, since it uses as much as digits as its factorization.

125438081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 125438081 is about 11199.9143300295. The cubic root of 125438081 is about 500.5834269612.

The spelling of 125438081 in words is "one hundred twenty-five million, four hundred thirty-eight thousand, eighty-one".