125657247 has 8 divisors (see below), whose sum is σ = 167598720. Its totient is φ = 83743640.

The previous prime is 125657237. The next prime is 125657281. The reversal of 125657247 is 742756521.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125657247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125657237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8404 + ... + 17942.

It is an arithmetic number, because the mean of its divisors is an integer number (20949840).

Almost surely, 2^125657247 is an apocalyptic number.

125657247 is a deficient number, since it is larger than the sum of its proper divisors (41941473).

125657247 is an equidigital number, since it uses as much as digits as its factorization.

125657247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13933.

The product of its digits is 117600, while the sum is 39.

The square root of 125657247 is about 11209.6943312474. The cubic root of 125657247 is about 500.8747978980.

The spelling of 125657247 in words is "one hundred twenty-five million, six hundred fifty-seven thousand, two hundred forty-seven".