125660217 has 4 divisors (see below), whose sum is σ = 167546960. Its totient is φ = 83773476.

The previous prime is 125660189. The next prime is 125660221. The reversal of 125660217 is 712066521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 125660217 - 2⁶ = 125660153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125660317) 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 3 ways as a sum of consecutive naturals, for example, 20943367 + ... + 20943372.

It is an arithmetic number, because the mean of its divisors is an integer number (41886740).

Almost surely, 2^125660217 is an apocalyptic number.

It is an amenable number.

125660217 is a deficient number, since it is larger than the sum of its proper divisors (41886743).

125660217 is an equidigital number, since it uses as much as digits as its factorization.

125660217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41886742.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 125660217 is about 11209.8268050849. The cubic root of 125660217 is about 500.8787440464.

The spelling of 125660217 in words is "one hundred twenty-five million, six hundred sixty thousand, two hundred seventeen".