25166837 has 2 divisors, whose sum is σ = 25166838. Its totient is φ = 25166836.

The previous prime is 25166819. The next prime is 25166879. The reversal of 25166837 is 73866152.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24462916 + 703921 = 4946^2 + 839^2 .

It is a cyclic number.

It is not a de Polignac number, because 25166837 - 2¹⁰ = 25165813 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 25166837.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25366837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12583418 + 12583419.

It is an arithmetic number, because the mean of its divisors is an integer number (12583419).

Almost surely, 2^25166837 is an apocalyptic number.

It is an amenable number.

25166837 is a deficient number, since it is larger than the sum of its proper divisors (1).

25166837 is an equidigital number, since it uses as much as digits as its factorization.

25166837 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 38.

The square root of 25166837 is about 5016.6559579066. The cubic root of 25166837 is about 293.0507780461.

The spelling of 25166837 in words is "twenty-five million, one hundred sixty-six thousand, eight hundred thirty-seven".