125647 has 8 divisors (see below), whose sum is σ = 140400. Its totient is φ = 111744.

The previous prime is 125641. The next prime is 125651. The reversal of 125647 is 746521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 125647 - 2³ = 125639 is a prime.

It is a d-powerful number, because it can be written as 1 + 2⁵ + 6⁵ + 5³ + 4³ + 7⁶ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129 + ... + 517.

It is an arithmetic number, because the mean of its divisors is an integer number (17550).

2¹²⁵⁶⁴⁷ is an apocalyptic number.

125647 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

125647 is a deficient number, since it is larger than the sum of its proper divisors (14753).

125647 is a wasteful number, since it uses less digits than its factorization.

125647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425.

The product of its digits is 1680, while the sum is 25.

The square root of 125647 is about 354.4672058174. The cubic root of 125647 is about 50.0861182544.

The spelling of 125647 in words is "one hundred twenty-five thousand, six hundred forty-seven".