12501617 has 2 divisors, whose sum is σ = 12501618. Its totient is φ = 12501616.

The previous prime is 12501607. The next prime is 12501623. The reversal of 12501617 is 71610521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9928801 + 2572816 = 3151^2 + 1604^2 .

It is a cyclic number.

It is not a de Polignac number, because 12501617 - 2⁸ = 12501361 is a prime.

It is a super-2 number, since 2×12501617² = 312580855229378, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 12501592 and 12501601.

It is not a weakly prime, because it can be changed into another prime (12501607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6250808 + 6250809.

It is an arithmetic number, because the mean of its divisors is an integer number (6250809).

Almost surely, 2^12501617 is an apocalyptic number.

It is an amenable number.

12501617 is a deficient number, since it is larger than the sum of its proper divisors (1).

12501617 is an equidigital number, since it uses as much as digits as its factorization.

12501617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 420, while the sum is 23.

The square root of 12501617 is about 3535.7625768708. The cubic root of 12501617 is about 232.0894485147.

The spelling of 12501617 in words is "twelve million, five hundred one thousand, six hundred seventeen".