25767317 has 2 divisors, whose sum is σ = 25767318. Its totient is φ = 25767316.

The previous prime is 25767271. The next prime is 25767319. The reversal of 25767317 is 71376752.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25060036 + 707281 = 5006^2 + 841^2 .

It is a cyclic number.

It is not a de Polignac number, because 25767317 - 2²⁰ = 24718741 is a prime.

Together with 25767319, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25767319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12883658 + 12883659.

It is an arithmetic number, because the mean of its divisors is an integer number (12883659).

Almost surely, 2^25767317 is an apocalyptic number.

It is an amenable number.

25767317 is a deficient number, since it is larger than the sum of its proper divisors (1).

25767317 is an equidigital number, since it uses as much as digits as its factorization.

25767317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 61740, while the sum is 38.

The square root of 25767317 is about 5076.1517904807. The cubic root of 25767317 is about 295.3632105762.

The spelling of 25767317 in words is "twenty-five million, seven hundred sixty-seven thousand, three hundred seventeen".