25736761 has 2 divisors, whose sum is σ = 25736762. Its totient is φ = 25736760.

The previous prime is 25736749. The next prime is 25736771. The reversal of 25736761 is 16763752.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13875625 + 11861136 = 3725^2 + 3444^2 .

It is a cyclic number.

It is not a de Polignac number, because 25736761 - 2⁵ = 25736729 is a prime.

It is a super-2 number, since 2×25736761² = 1324761733542242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25736761.

It is not a weakly prime, because it can be changed into another prime (25736741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12868380 + 12868381.

It is an arithmetic number, because the mean of its divisors is an integer number (12868381).

Almost surely, 2^25736761 is an apocalyptic number.

It is an amenable number.

25736761 is a deficient number, since it is larger than the sum of its proper divisors (1).

25736761 is an equidigital number, since it uses as much as digits as its factorization.

25736761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52920, while the sum is 37.

The square root of 25736761 is about 5073.1411374020. The cubic root of 25736761 is about 295.2464129022.

The spelling of 25736761 in words is "twenty-five million, seven hundred thirty-six thousand, seven hundred sixty-one".