25263289 has 2 divisors, whose sum is σ = 25263290. Its totient is φ = 25263288.

The previous prime is 25263283. The next prime is 25263313. The reversal of 25263289 is 98236252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19053225 + 6210064 = 4365^2 + 2492^2 .

It is a cyclic number.

It is not a de Polignac number, because 25263289 - 2³ = 25263281 is a prime.

It is not a weakly prime, because it can be changed into another prime (25263281) 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, 12631644 + 12631645.

It is an arithmetic number, because the mean of its divisors is an integer number (12631645).

Almost surely, 2^25263289 is an apocalyptic number.

It is an amenable number.

25263289 is a deficient number, since it is larger than the sum of its proper divisors (1).

25263289 is an equidigital number, since it uses as much as digits as its factorization.

25263289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 37.

The square root of 25263289 is about 5026.2599415470. The cubic root of 25263289 is about 293.4246735464.

It can be divided in two parts, 25263 and 289, that added together give a palindrome (25552).

The spelling of 25263289 in words is "twenty-five million, two hundred sixty-three thousand, two hundred eighty-nine".