425869 has 2 divisors, whose sum is σ = 425870. Its totient is φ = 425868.

The previous prime is 425861. The next prime is 425879. The reversal of 425869 is 968524.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 316969 + 108900 = 563^2 + 330^2 .

It is a cyclic number.

It is not a de Polignac number, because 425869 - 2³ = 425861 is a prime.

It is a super-2 number, since 2×425869² = 362728810322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (425861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212934 + 212935.

It is an arithmetic number, because the mean of its divisors is an integer number (212935).

2⁴²⁵⁸⁶⁹ is an apocalyptic number.

It is an amenable number.

425869 is a deficient number, since it is larger than the sum of its proper divisors (1).

425869 is an equidigital number, since it uses as much as digits as its factorization.

425869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 34.

The square root of 425869 is about 652.5863927481. The cubic root of 425869 is about 75.2359384770.

The spelling of 425869 in words is "four hundred twenty-five thousand, eight hundred sixty-nine".