25689253 has 2 divisors, whose sum is σ = 25689254. Its totient is φ = 25689252.

The previous prime is 25689233. The next prime is 25689271. The reversal of 25689253 is 35298652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20223009 + 5466244 = 4497^2 + 2338^2 .

It is a cyclic number.

It is not a de Polignac number, because 25689253 - 2⁵ = 25689221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25689233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12844626 + 12844627.

It is an arithmetic number, because the mean of its divisors is an integer number (12844627).

Almost surely, 2^25689253 is an apocalyptic number.

It is an amenable number.

25689253 is a deficient number, since it is larger than the sum of its proper divisors (1).

25689253 is an equidigital number, since it uses as much as digits as its factorization.

25689253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129600, while the sum is 40.

The square root of 25689253 is about 5068.4566684544. The cubic root of 25689253 is about 295.0646339274.

The spelling of 25689253 in words is "twenty-five million, six hundred eighty-nine thousand, two hundred fifty-three".