25816253 has 2 divisors, whose sum is σ = 25816254. Its totient is φ = 25816252.

The previous prime is 25816223. The next prime is 25816261. The reversal of 25816253 is 35261852.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13235044 + 12581209 = 3638^2 + 3547^2 .

It is a cyclic number.

It is not a de Polignac number, because 25816253 - 2¹⁶ = 25750717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25816213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12908126 + 12908127.

It is an arithmetic number, because the mean of its divisors is an integer number (12908127).

Almost surely, 2^25816253 is an apocalyptic number.

It is an amenable number.

25816253 is a deficient number, since it is larger than the sum of its proper divisors (1).

25816253 is an equidigital number, since it uses as much as digits as its factorization.

25816253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14400, while the sum is 32.

The square root of 25816253 is about 5080.9696909153. The cubic root of 25816253 is about 295.5500720136.

The spelling of 25816253 in words is "twenty-five million, eight hundred sixteen thousand, two hundred fifty-three".