25867241 has 2 divisors, whose sum is σ = 25867242. Its totient is φ = 25867240.

The previous prime is 25867223. The next prime is 25867243. The reversal of 25867241 is 14276852.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25050025 + 817216 = 5005^2 + 904^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25867241 is a prime.

It is a super-2 number, since 2×25867241² = 1338228313904162, which contains 22 as substring.

Together with 25867243, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25867243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12933620 + 12933621.

It is an arithmetic number, because the mean of its divisors is an integer number (12933621).

Almost surely, 2^25867241 is an apocalyptic number.

It is an amenable number.

25867241 is a deficient number, since it is larger than the sum of its proper divisors (1).

25867241 is an equidigital number, since it uses as much as digits as its factorization.

25867241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26880, while the sum is 35.

The square root of 25867241 is about 5085.9847620692. The cubic root of 25867241 is about 295.7445179570.

The spelling of 25867241 in words is "twenty-five million, eight hundred sixty-seven thousand, two hundred forty-one".