25755869 has 2 divisors, whose sum is σ = 25755870. Its totient is φ = 25755868.

The previous prime is 25755841. The next prime is 25755881. The reversal of 25755869 is 96855752.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22562500 + 3193369 = 4750^2 + 1787^2 .

It is a cyclic number.

It is not a de Polignac number, because 25755869 - 2¹² = 25751773 is a prime.

It is a super-2 number, since 2×25755869² = 1326729575890322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25752869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12877934 + 12877935.

It is an arithmetic number, because the mean of its divisors is an integer number (12877935).

Almost surely, 2^25755869 is an apocalyptic number.

It is an amenable number.

25755869 is a deficient number, since it is larger than the sum of its proper divisors (1).

25755869 is an equidigital number, since it uses as much as digits as its factorization.

25755869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 756000, while the sum is 47.

The square root of 25755869 is about 5075.0240393519. The cubic root of 25755869 is about 295.3194624060.

The spelling of 25755869 in words is "twenty-five million, seven hundred fifty-five thousand, eight hundred sixty-nine".