125012617 has 4 divisors (see below), whose sum is σ = 125045316. Its totient is φ = 124979920.

The previous prime is 125012581. The next prime is 125012633. The reversal of 125012617 is 716210521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 77070841 + 47941776 = 8779^2 + 6924^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125012617 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 125012591 and 125012600.

It is not an unprimeable number, because it can be changed into a prime (125012117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9718 + ... + 18559.

It is an arithmetic number, because the mean of its divisors is an integer number (31261329).

Almost surely, 2^125012617 is an apocalyptic number.

It is an amenable number.

125012617 is a deficient number, since it is larger than the sum of its proper divisors (32699).

125012617 is an equidigital number, since it uses as much as digits as its factorization.

125012617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32698.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 125012617 is about 11180.9041226548. The cubic root of 125012617 is about 500.0168221007.

The spelling of 125012617 in words is "one hundred twenty-five million, twelve thousand, six hundred seventeen".