125606647 has 4 divisors (see below), whose sum is σ = 127327360. Its totient is φ = 123885936.

The previous prime is 125606641. The next prime is 125606651. The reversal of 125606647 is 746606521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 746606521 = 103 ⋅7248607.

It is a cyclic number.

It is not a de Polignac number, because 125606647 - 2²³ = 117218039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125606641) 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 in 3 ways as a sum of consecutive naturals, for example, 860247 + ... + 860392.

It is an arithmetic number, because the mean of its divisors is an integer number (31831840).

Almost surely, 2^125606647 is an apocalyptic number.

125606647 is a deficient number, since it is larger than the sum of its proper divisors (1720713).

125606647 is an equidigital number, since it uses as much as digits as its factorization.

125606647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1720712.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 125606647 is about 11207.4371289782. The cubic root of 125606647 is about 500.8075576657.

It can be divided in two parts, 125606 and 647, that added together give a triangular number (126253 = T₅₀₂).

The spelling of 125606647 in words is "one hundred twenty-five million, six hundred six thousand, six hundred forty-seven".