25767761 has 2 divisors, whose sum is σ = 25767762. Its totient is φ = 25767760.

The previous prime is 25767683. The next prime is 25767769. The reversal of 25767761 is 16776752.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18011536 + 7756225 = 4244^2 + 2785^2 .

It is a cyclic number.

It is not a de Polignac number, because 25767761 - 2¹⁴ = 25751377 is a prime.

It is not a weakly prime, because it can be changed into another prime (25767769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12883880 + 12883881.

It is an arithmetic number, because the mean of its divisors is an integer number (12883881).

Almost surely, 2^25767761 is an apocalyptic number.

It is an amenable number.

25767761 is a deficient number, since it is larger than the sum of its proper divisors (1).

25767761 is an equidigital number, since it uses as much as digits as its factorization.

25767761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 123480, while the sum is 41.

The square root of 25767761 is about 5076.1955242091. The cubic root of 25767761 is about 295.3649070471.

The spelling of 25767761 in words is "twenty-five million, seven hundred sixty-seven thousand, seven hundred sixty-one".