25626617 has 2 divisors, whose sum is σ = 25626618. Its totient is φ = 25626616.

The previous prime is 25626593. The next prime is 25626631. The reversal of 25626617 is 71662652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18113536 + 7513081 = 4256^2 + 2741^2 .

It is a cyclic number.

It is not a de Polignac number, because 25626617 - 2²⁰ = 24578041 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25626917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12813308 + 12813309.

It is an arithmetic number, because the mean of its divisors is an integer number (12813309).

Almost surely, 2^25626617 is an apocalyptic number.

It is an amenable number.

25626617 is a deficient number, since it is larger than the sum of its proper divisors (1).

25626617 is an equidigital number, since it uses as much as digits as its factorization.

25626617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 35.

The square root of 25626617 is about 5062.2738961854. The cubic root of 25626617 is about 294.8246281220.

The spelling of 25626617 in words is "twenty-five million, six hundred twenty-six thousand, six hundred seventeen".