25675381 has 2 divisors, whose sum is σ = 25675382. Its totient is φ = 25675380.

The previous prime is 25675367. The next prime is 25675421. The reversal of 25675381 is 18357652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25664356 + 11025 = 5066^2 + 105^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25675381 is a prime.

It is a super-2 number, since 2×25675381² = 1318450378990322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25675381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25675681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12837690 + 12837691.

It is an arithmetic number, because the mean of its divisors is an integer number (12837691).

Almost surely, 2^25675381 is an apocalyptic number.

It is an amenable number.

25675381 is a deficient number, since it is larger than the sum of its proper divisors (1).

25675381 is an equidigital number, since it uses as much as digits as its factorization.

25675381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50400, while the sum is 37.

The square root of 25675381 is about 5067.0880197605. The cubic root of 25675381 is about 295.0115134834.

The spelling of 25675381 in words is "twenty-five million, six hundred seventy-five thousand, three hundred eighty-one".