25786853 has 2 divisors, whose sum is σ = 25786854. Its totient is φ = 25786852.

The previous prime is 25786843. The next prime is 25786883. The reversal of 25786853 is 35868752.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18130564 + 7656289 = 4258^2 + 2767^2 .

It is a cyclic number.

It is not a de Polignac number, because 25786853 - 2⁴ = 25786837 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25786843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12893426 + 12893427.

It is an arithmetic number, because the mean of its divisors is an integer number (12893427).

Almost surely, 2^25786853 is an apocalyptic number.

It is an amenable number.

25786853 is a deficient number, since it is larger than the sum of its proper divisors (1).

25786853 is an equidigital number, since it uses as much as digits as its factorization.

25786853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 403200, while the sum is 44.

The square root of 25786853 is about 5078.0757182224. The cubic root of 25786853 is about 295.4378368690.

It can be divided in two parts, 257 and 86853, that multiplied together give a triangular number (22321221 = T₆₆₈₁).

The spelling of 25786853 in words is "twenty-five million, seven hundred eighty-six thousand, eight hundred fifty-three".