425215169 has 8 divisors (see below), whose sum is σ = 451005408. Its totient is φ = 399511360.

The previous prime is 425215163. The next prime is 425215171. The reversal of 425215169 is 961512524.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 425215169 - 2²⁰ = 424166593 is a prime.

It is a super-2 number, since 2×425215169² = 361615879895397122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (425215163) 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 in 7 ways as a sum of consecutive naturals, for example, 11327 + ... + 31284.

It is an arithmetic number, because the mean of its divisors is an integer number (56375676).

Almost surely, 2^425215169 is an apocalyptic number.

It is an amenable number.

425215169 is a deficient number, since it is larger than the sum of its proper divisors (25790239).

425215169 is a wasteful number, since it uses less digits than its factorization.

425215169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43215.

The product of its digits is 21600, while the sum is 35.

The square root of 425215169 is about 20620.7460825257. The cubic root of 425215169 is about 751.9741584460.

The spelling of 425215169 in words is "four hundred twenty-five million, two hundred fifteen thousand, one hundred sixty-nine".