1025669 has 2 divisors, whose sum is σ = 1025670. Its totient is φ = 1025668.

The previous prime is 1025659. The next prime is 1025693. The reversal of 1025669 is 9665201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 744769 + 280900 = 863^2 + 530^2 .

It is a cyclic number.

It is not a de Polignac number, because 1025669 - 2⁴ = 1025653 is a prime.

It is a super-2 number, since 2×1025669² = 2103993795122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1025659) 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, 512834 + 512835.

It is an arithmetic number, because the mean of its divisors is an integer number (512835).

2^1025669 is an apocalyptic number.

It is an amenable number.

1025669 is a deficient number, since it is larger than the sum of its proper divisors (1).

1025669 is an equidigital number, since it uses as much as digits as its factorization.

1025669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 1025669 is about 1012.7531782226. The cubic root of 1025669 is about 100.8484148984.

The spelling of 1025669 in words is "one million, twenty-five thousand, six hundred sixty-nine".