25287167 has 2 divisors, whose sum is σ = 25287168. Its totient is φ = 25287166.

The previous prime is 25287137. The next prime is 25287191. The reversal of 25287167 is 76178252.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25287167 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25287167.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25287137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12643583 + 12643584.

It is an arithmetic number, because the mean of its divisors is an integer number (12643584).

Almost surely, 2^25287167 is an apocalyptic number.

25287167 is a deficient number, since it is larger than the sum of its proper divisors (1).

25287167 is an equidigital number, since it uses as much as digits as its factorization.

25287167 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47040, while the sum is 38.

The square root of 25287167 is about 5028.6347053649. The cubic root of 25287167 is about 293.5170894377.

The spelling of 25287167 in words is "twenty-five million, two hundred eighty-seven thousand, one hundred sixty-seven".