25765757 has 2 divisors, whose sum is σ = 25765758. Its totient is φ = 25765756.

The previous prime is 25765739. The next prime is 25765763. The reversal of 25765757 is 75756752.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24661156 + 1104601 = 4966^2 + 1051^2 .

It is a cyclic number.

It is not a de Polignac number, because 25765757 - 2²⁰ = 24717181 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25765777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12882878 + 12882879.

It is an arithmetic number, because the mean of its divisors is an integer number (12882879).

Almost surely, 2^25765757 is an apocalyptic number.

It is an amenable number.

25765757 is a deficient number, since it is larger than the sum of its proper divisors (1).

25765757 is an equidigital number, since it uses as much as digits as its factorization.

25765757 is an evil number, because the sum of its binary digits is even.

The product of its digits is 514500, while the sum is 44.

The square root of 25765757 is about 5075.9981284473. The cubic root of 25765757 is about 295.3572498482.

The spelling of 25765757 in words is "twenty-five million, seven hundred sixty-five thousand, seven hundred fifty-seven".