25797137 has 2 divisors, whose sum is σ = 25797138. Its totient is φ = 25797136.

The previous prime is 25797131. The next prime is 25797157. The reversal of 25797137 is 73179752.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14714896 + 11082241 = 3836^2 + 3329^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25797137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25797094 and 25797103.

It is not a weakly prime, because it can be changed into another prime (25797131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12898568 + 12898569.

It is an arithmetic number, because the mean of its divisors is an integer number (12898569).

Almost surely, 2^25797137 is an apocalyptic number.

It is an amenable number.

25797137 is a deficient number, since it is larger than the sum of its proper divisors (1).

25797137 is an equidigital number, since it uses as much as digits as its factorization.

25797137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 92610, while the sum is 41.

The square root of 25797137 is about 5079.0882055739. The cubic root of 25797137 is about 295.4771059610.

The spelling of 25797137 in words is "twenty-five million, seven hundred ninety-seven thousand, one hundred thirty-seven".