125566667 has 2 divisors, whose sum is σ = 125566668. Its totient is φ = 125566666.

The previous prime is 125566663. The next prime is 125566669. The reversal of 125566667 is 766665521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 125566667 - 2² = 125566663 is a prime.

It is a super-2 number, since 2×125566667² = 31533975722977778, which contains 22 as substring.

Together with 125566669, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (125566663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62783333 + 62783334.

It is an arithmetic number, because the mean of its divisors is an integer number (62783334).

Almost surely, 2^125566667 is an apocalyptic number.

125566667 is a deficient number, since it is larger than the sum of its proper divisors (1).

125566667 is an equidigital number, since it uses as much as digits as its factorization.

125566667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 453600, while the sum is 44.

The square root of 125566667 is about 11205.6533499837. The cubic root of 125566667 is about 500.7544171371.

The spelling of 125566667 in words is "one hundred twenty-five million, five hundred sixty-six thousand, six hundred sixty-seven".