25797131 has 2 divisors, whose sum is σ = 25797132. Its totient is φ = 25797130.

The previous prime is 25797127. The next prime is 25797137. The reversal of 25797131 is 13179752.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25797131 - 2² = 25797127 is a prime.

It is a super-2 number, since 2×25797131² = 1330983935662322, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 25797091 and 25797100.

It is not a weakly prime, because it can be changed into another prime (25797137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12898565 + 12898566.

It is an arithmetic number, because the mean of its divisors is an integer number (12898566).

Almost surely, 2^25797131 is an apocalyptic number.

25797131 is a deficient number, since it is larger than the sum of its proper divisors (1).

25797131 is an equidigital number, since it uses as much as digits as its factorization.

25797131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13230, while the sum is 35.

The square root of 25797131 is about 5079.0876149167. The cubic root of 25797131 is about 295.4770830532.

The spelling of 25797131 in words is "twenty-five million, seven hundred ninety-seven thousand, one hundred thirty-one".