1282500997 has 2 divisors, whose sum is σ = 1282500998. Its totient is φ = 1282500996.

The previous prime is 1282500983. The next prime is 1282501001. The reversal of 1282500997 is 7990052821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 960442081 + 322058916 = 30991^2 + 17946^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1282500997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1282500917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 641250498 + 641250499.

It is an arithmetic number, because the mean of its divisors is an integer number (641250499).

Almost surely, 2^1282500997 is an apocalyptic number.

It is an amenable number.

1282500997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1282500997 is an equidigital number, since it uses as much as digits as its factorization.

1282500997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 1282500997 is about 35812.0230788488. The cubic root of 1282500997 is about 1086.4737480533.

The spelling of 1282500997 in words is "one billion, two hundred eighty-two million, five hundred thousand, nine hundred ninety-seven".