25965497 has 2 divisors, whose sum is σ = 25965498. Its totient is φ = 25965496.

The previous prime is 25965439. The next prime is 25965517. The reversal of 25965497 is 79456952.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24790441 + 1175056 = 4979^2 + 1084^2 .

It is a cyclic number.

It is not a de Polignac number, because 25965497 - 2¹⁰ = 25964473 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25965427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12982748 + 12982749.

It is an arithmetic number, because the mean of its divisors is an integer number (12982749).

Almost surely, 2^25965497 is an apocalyptic number.

It is an amenable number.

25965497 is a deficient number, since it is larger than the sum of its proper divisors (1).

25965497 is an equidigital number, since it uses as much as digits as its factorization.

25965497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 680400, while the sum is 47.

The square root of 25965497 is about 5095.6350929006. The cubic root of 25965497 is about 296.1185039566.

It can be divided in two parts, 25965 and 497, that added together give a palindrome (26462).

The spelling of 25965497 in words is "twenty-five million, nine hundred sixty-five thousand, four hundred ninety-seven".