1265197 has 2 divisors, whose sum is σ = 1265198. Its totient is φ = 1265196.

The previous prime is 1265179. The next prime is 1265233. The reversal of 1265197 is 7915621.

Together with previous prime (1265179) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1052676 + 212521 = 1026^2 + 461^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1265197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1265167) 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, 632598 + 632599.

It is an arithmetic number, because the mean of its divisors is an integer number (632599).

2^1265197 is an apocalyptic number.

It is an amenable number.

1265197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1265197 is an equidigital number, since it uses as much as digits as its factorization.

1265197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3780, while the sum is 31.

The square root of 1265197 is about 1124.8097616931. The cubic root of 1265197 is about 108.1565231575.

The spelling of 1265197 in words is "one million, two hundred sixty-five thousand, one hundred ninety-seven".