13625917 has 2 divisors, whose sum is σ = 13625918. Its totient is φ = 13625916.

The previous prime is 13625903. The next prime is 13625933. The reversal of 13625917 is 71952631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7918596 + 5707321 = 2814^2 + 2389^2 .

It is a cyclic number.

It is not a de Polignac number, because 13625917 - 2¹⁹ = 13101629 is a prime.

It is a super-2 number, since 2×13625917² = 371331228181778, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13625947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6812958 + 6812959.

It is an arithmetic number, because the mean of its divisors is an integer number (6812959).

Almost surely, 2^13625917 is an apocalyptic number.

It is an amenable number.

13625917 is a deficient number, since it is larger than the sum of its proper divisors (1).

13625917 is an equidigital number, since it uses as much as digits as its factorization.

13625917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11340, while the sum is 34.

The square root of 13625917 is about 3691.3299771221. The cubic root of 13625917 is about 238.8481671910.

The spelling of 13625917 in words is "thirteen million, six hundred twenty-five thousand, nine hundred seventeen".