2500085761 has 2 divisors, whose sum is σ = 2500085762. Its totient is φ = 2500085760.

The previous prime is 2500085719. The next prime is 2500085837. The reversal of 2500085761 is 1675800052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2488114161 + 11971600 = 49881^2 + 3460^2 .

It is a cyclic number.

It is not a de Polignac number, because 2500085761 - 2⁷ = 2500085633 is a prime.

It is not a weakly prime, because it can be changed into another prime (2500085701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1250042880 + 1250042881.

It is an arithmetic number, because the mean of its divisors is an integer number (1250042881).

Almost surely, 2^2500085761 is an apocalyptic number.

It is an amenable number.

2500085761 is a deficient number, since it is larger than the sum of its proper divisors (1).

2500085761 is an equidigital number, since it uses as much as digits as its factorization.

2500085761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 2500085761 is about 50000.8576026452. The cubic root of 2500085761 is about 1357.2243275313.

The spelling of 2500085761 in words is "two billion, five hundred million, eighty-five thousand, seven hundred sixty-one".