420833425 has 6 divisors (see below), whose sum is σ = 521833478. Its totient is φ = 336666720.

The previous prime is 420833411. The next prime is 420833431. The reversal of 420833425 is 524338024.

It can be written as a sum of positive squares in 3 ways, for example, as 21752896 + 399080529 = 4664^2 + 19977^2 .

It is not a de Polignac number, because 420833425 - 2⁹ = 420832913 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8416644 + ... + 8416693.

Almost surely, 2^420833425 is an apocalyptic number.

It is an amenable number.

420833425 is a deficient number, since it is larger than the sum of its proper divisors (101000053).

420833425 is a wasteful number, since it uses less digits than its factorization.

420833425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16833347 (or 16833342 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 420833425 is about 20514.2249427074. The cubic root of 420833425 is about 749.3822617093.

The spelling of 420833425 in words is "four hundred twenty million, eight hundred thirty-three thousand, four hundred twenty-five".