125934581 has 2 divisors, whose sum is σ = 125934582. Its totient is φ = 125934580.

The previous prime is 125934553. The next prime is 125934583. The reversal of 125934581 is 185439521.

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., 122456356 + 3478225 = 11066^2 + 1865^2 .

It is a cyclic number.

It is not a de Polignac number, because 125934581 - 2⁶ = 125934517 is a prime.

It is a super-2 number, since 2×125934581² = 31719037383291122, which contains 22 as substring.

Together with 125934583, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125934583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62967290 + 62967291.

It is an arithmetic number, because the mean of its divisors is an integer number (62967291).

Almost surely, 2^125934581 is an apocalyptic number.

It is an amenable number.

125934581 is a deficient number, since it is larger than the sum of its proper divisors (1).

125934581 is an equidigital number, since it uses as much as digits as its factorization.

125934581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 38.

The square root of 125934581 is about 11222.0577881242. The cubic root of 125934581 is about 501.2430152653.

The spelling of 125934581 in words is "one hundred twenty-five million, nine hundred thirty-four thousand, five hundred eighty-one".