420025345 has 16 divisors (see below), whose sum is σ = 512699328. Its totient is φ = 330264000.

The previous prime is 420025337. The next prime is 420025363. The reversal of 420025345 is 543520024.

It is not a de Polignac number, because 420025345 - 2³ = 420025337 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185470 + ... + 187720.

It is an arithmetic number, because the mean of its divisors is an integer number (32043708).

Almost surely, 2^420025345 is an apocalyptic number.

It is an amenable number.

420025345 is a deficient number, since it is larger than the sum of its proper divisors (92673983).

420025345 is a wasteful number, since it uses less digits than its factorization.

420025345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2880.

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 420025345 is about 20494.5198772745. The cubic root of 420025345 is about 748.9023023451.

Adding to 420025345 its reverse (543520024), we get a palindrome (963545369).

The spelling of 420025345 in words is "four hundred twenty million, twenty-five thousand, three hundred forty-five".