425026169 has 2 divisors, whose sum is σ = 425026170. Its totient is φ = 425026168.

The previous prime is 425026159. The next prime is 425026171. The reversal of 425026169 is 961620524.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 371911225 + 53114944 = 19285^2 + 7288^2 .

It is a cyclic number.

It is not a de Polignac number, because 425026169 - 2¹⁶ = 424960633 is a prime.

It is a super-2 number, since 2×425026169² = 361294488669633122, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 425026171, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (425026159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212513084 + 212513085.

It is an arithmetic number, because the mean of its divisors is an integer number (212513085).

Almost surely, 2^425026169 is an apocalyptic number.

It is an amenable number.

425026169 is a deficient number, since it is larger than the sum of its proper divisors (1).

425026169 is an equidigital number, since it uses as much as digits as its factorization.

425026169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 425026169 is about 20616.1628097956. The cubic root of 425026169 is about 751.8627292304.

The spelling of 425026169 in words is "four hundred twenty-five million, twenty-six thousand, one hundred sixty-nine".