125717557 has 8 divisors (see below), whose sum is σ = 143944256. Its totient is φ = 107557632.

The previous prime is 125717551. The next prime is 125717569. The reversal of 125717557 is 755717521.

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

It is not a de Polignac number, because 125717557 - 2¹⁵ = 125684789 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 (125717551) 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, 12588 + ... + 20245.

It is an arithmetic number, because the mean of its divisors is an integer number (17993032).

Almost surely, 2^125717557 is an apocalyptic number.

It is an amenable number.

125717557 is a deficient number, since it is larger than the sum of its proper divisors (18226699).

125717557 is an equidigital number, since it uses as much as digits as its factorization.

125717557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33387.

The product of its digits is 85750, while the sum is 40.

The square root of 125717557 is about 11212.3840908167. The cubic root of 125717557 is about 500.9549177698.

The spelling of 125717557 in words is "one hundred twenty-five million, seven hundred seventeen thousand, five hundred fifty-seven".