420341825 has 6 divisors (see below), whose sum is σ = 521223894. Its totient is φ = 336273440.

The previous prime is 420341819. The next prime is 420341827. The reversal of 420341825 is 528143024.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 2262016 + 418079809 = 1504^2 + 20447^2 .

It is not a de Polignac number, because 420341825 - 2²⁶ = 353232961 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (420341827) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8406812 + ... + 8406861.

It is an arithmetic number, because the mean of its divisors is an integer number (86870649).

Almost surely, 2^420341825 is an apocalyptic number.

It is an amenable number.

420341825 is a deficient number, since it is larger than the sum of its proper divisors (100882069).

420341825 is a wasteful number, since it uses less digits than its factorization.

420341825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16813683 (or 16813678 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 420341825 is about 20502.2395118192. The cubic root of 420341825 is about 749.0903490113.

Adding to 420341825 its reverse (528143024), we get a palindrome (948484849).

The spelling of 420341825 in words is "four hundred twenty million, three hundred forty-one thousand, eight hundred twenty-five".