420525223 has 4 divisors (see below), whose sum is σ = 421895320. Its totient is φ = 419155128.

The previous prime is 420525197. The next prime is 420525241. The reversal of 420525223 is 322525024.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420525223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420525253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 684588 + ... + 685201.

It is an arithmetic number, because the mean of its divisors is an integer number (105473830).

Almost surely, 2^420525223 is an apocalyptic number.

420525223 is a deficient number, since it is larger than the sum of its proper divisors (1370097).

420525223 is a wasteful number, since it uses less digits than its factorization.

420525223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1370096.

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

The square root of 420525223 is about 20506.7116574062. The cubic root of 420525223 is about 749.1992775772.

The spelling of 420525223 in words is "four hundred twenty million, five hundred twenty-five thousand, two hundred twenty-three".