125782647 has 8 divisors (see below), whose sum is σ = 172243056. Its totient is φ = 81588672.

The previous prime is 125782639. The next prime is 125782649. The reversal of 125782647 is 746287521.

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

It is not a de Polignac number, because 125782647 - 2³ = 125782639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 125782599 and 125782608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125782649) 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 7 ways as a sum of consecutive naturals, for example, 566478 + ... + 566699.

It is an arithmetic number, because the mean of its divisors is an integer number (21530382).

Almost surely, 2^125782647 is an apocalyptic number.

125782647 is a deficient number, since it is larger than the sum of its proper divisors (46460409).

125782647 is a wasteful number, since it uses less digits than its factorization.

125782647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1133217.

The product of its digits is 188160, while the sum is 42.

The square root of 125782647 is about 11215.2863093191. The cubic root of 125782647 is about 501.0413589706.

It can be divided in two parts, 12578 and 2647, that added together give a triangular number (15225 = T₁₇₄).

The spelling of 125782647 in words is "one hundred twenty-five million, seven hundred eighty-two thousand, six hundred forty-seven".