1285507 has 2 divisors, whose sum is σ = 1285508. Its totient is φ = 1285506.

The previous prime is 1285481. The next prime is 1285511. The reversal of 1285507 is 7055821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1285507 - 2¹⁵ = 1252739 is a prime.

It is a Chen prime.

1285507 is a lucky number.

It is a plaindrome in base 14.

It is not a weakly prime, because it can be changed into another prime (1285517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 642753 + 642754.

It is an arithmetic number, because the mean of its divisors is an integer number (642754).

2^1285507 is an apocalyptic number.

1285507 is a deficient number, since it is larger than the sum of its proper divisors (1).

1285507 is an equidigital number, since it uses as much as digits as its factorization.

1285507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2800, while the sum is 28.

The square root of 1285507 is about 1133.8020109349. The cubic root of 1285507 is about 108.7321933235.

The spelling of 1285507 in words is "one million, two hundred eighty-five thousand, five hundred seven".